257105940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{31}}^2$

素因数の和:108

約数の個数: 288

約数和(自身を含む): 934214400

約数和(自身を除く): 677108460

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 31, 35, 39, 42, 49, 52, 60, 62, 65, 70, 78, 84, 91, 93, 98, 105, 124, 130, 140, 147, 155, 156, 182, 186, 195, 196, 210, 217, 245, 260, 273, 294, 310, 343, 364, 372, 390, 403, 420, 434, 455, 465, 490, 546, 588, 620, 637, 651, 686, 735, 780, 806, 868, 910, 930, 961, 980, 1029, 1085, 1092, 1209, 1274, 1302, 1365, 1372, 1470, 1519, 1612, 1715, 1820, 1860, 1911, 1922, 2015, 2058, 2170, 2418, 2548, 2604, 2730, 2821, 2883, 2940, 3038, 3185, 3255, 3430, 3822, 3844, 4030, 4116, 4340, 4459, 4557, 4805, 4836, 5145, 5460, 5642, 5766, 6045, 6076, 6370, 6510, 6727, 6860, 7595, 7644, 8060, 8463, 8918, 9114, 9555, 9610, 10290, 10633, 11284, 11532, 12090, 12493, 12740, 13020, 13377, 13454, 14105, 14415, 15190, 16926, 17836, 18228, 19110, 19220, 19747, 20181, 20580, 21266, 22295, 22785, 24180, 24986, 26754, 26908, 28210, 28830, 30380, 31899, 33635, 33852, 37479, 38220, 39494, 40362, 42315, 42532, 44590, 45570, 47089, 49972, 53165, 53508, 56420, 57660, 59241, 62465, 63798, 66885, 67270, 74958, 78988, 80724, 84630, 87451, 89180, 91140, 94178, 98735, 100905, 106330, 118482, 124930, 127596, 133770, 134540, 138229, 141267, 149916, 159495, 169260, 174902, 187395, 188356, 197470, 201810, 212660, 235445, 236964, 249860, 262353, 267540, 276458, 282534, 296205, 318990, 329623, 349804, 374790, 394940, 403620, 414687, 437255, 470890, 524706, 552916, 565068, 592410, 612157, 637980, 659246, 691145, 706335, 749580, 829374, 874510, 941780, 988869, 1049412, 1184820, 1224314, 1311765, 1318492, 1382290, 1412670, 1648115, 1658748, 1749020, 1836471, 1977738, 2073435, 2448628, 2623530, 2764580, 2825340, 3060785, 3296230, 3672942, 3955476, 4146870, 4285099, 4944345, 5247060, 6121570, 6592460, 7345884, 8293740, 8570198, 9182355, 9888690, 12243140, 12855297, 17140396, 18364710, 19777380, 21425495, 25710594, 36729420, 42850990, 51421188, 64276485, 85701980, 128552970, 257105940]

約数ペア:

[(1, 257105940), (2, 128552970), (3, 85701980), (4, 64276485), (5, 51421188), (6, 42850990), (7, 36729420), (10, 25710594), (12, 21425495), (13, 19777380), (14, 18364710), (15, 17140396), (20, 12855297), (21, 12243140), (26, 9888690), (28, 9182355), (30, 8570198), (31, 8293740), (35, 7345884), (39, 6592460), (42, 6121570), (49, 5247060), (52, 4944345), (60, 4285099), (62, 4146870), (65, 3955476), (70, 3672942), (78, 3296230), (84, 3060785), (91, 2825340), (93, 2764580), (98, 2623530), (105, 2448628), (124, 2073435), (130, 1977738), (140, 1836471), (147, 1749020), (155, 1658748), (156, 1648115), (182, 1412670), (186, 1382290), (195, 1318492), (196, 1311765), (210, 1224314), (217, 1184820), (245, 1049412), (260, 988869), (273, 941780), (294, 874510), (310, 829374), (343, 749580), (364, 706335), (372, 691145), (390, 659246), (403, 637980), (420, 612157), (434, 592410), (455, 565068), (465, 552916), (490, 524706), (546, 470890), (588, 437255), (620, 414687), (637, 403620), (651, 394940), (686, 374790), (735, 349804), (780, 329623), (806, 318990), (868, 296205), (910, 282534), (930, 276458), (961, 267540), (980, 262353), (1029, 249860), (1085, 236964), (1092, 235445), (1209, 212660), (1274, 201810), (1302, 197470), (1365, 188356), (1372, 187395), (1470, 174902), (1519, 169260), (1612, 159495), (1715, 149916), (1820, 141267), (1860, 138229), (1911, 134540), (1922, 133770), (2015, 127596), (2058, 124930), (2170, 118482), (2418, 106330), (2548, 100905), (2604, 98735), (2730, 94178), (2821, 91140), (2883, 89180), (2940, 87451), (3038, 84630), (3185, 80724), (3255, 78988), (3430, 74958), (3822, 67270), (3844, 66885), (4030, 63798), (4116, 62465), (4340, 59241), (4459, 57660), (4557, 56420), (4805, 53508), (4836, 53165), (5145, 49972), (5460, 47089), (5642, 45570), (5766, 44590), (6045, 42532), (6076, 42315), (6370, 40362), (6510, 39494), (6727, 38220), (6860, 37479), (7595, 33852), (7644, 33635), (8060, 31899), (8463, 30380), (8918, 28830), (9114, 28210), (9555, 26908), (9610, 26754), (10290, 24986), (10633, 24180), (11284, 22785), (11532, 22295), (12090, 21266), (12493, 20580), (12740, 20181), (13020, 19747), (13377, 19220), (13454, 19110), (14105, 18228), (14415, 17836), (15190, 16926)]