1388721880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{397}}^1$

素因数の和:490

約数の個数: 192

約数和(自身を含む): 3983757120

約数和(自身を除く): 2595035240

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 31, 35, 40, 52, 56, 62, 65, 70, 91, 104, 124, 130, 140, 155, 182, 217, 248, 260, 280, 310, 364, 397, 403, 434, 455, 520, 620, 728, 794, 806, 868, 910, 961, 1085, 1240, 1588, 1612, 1736, 1820, 1922, 1985, 2015, 2170, 2779, 2821, 3176, 3224, 3640, 3844, 3970, 4030, 4340, 4805, 5161, 5558, 5642, 6727, 7688, 7940, 8060, 8680, 9610, 10322, 11116, 11284, 12307, 12493, 13454, 13895, 14105, 15880, 16120, 19220, 20644, 22232, 22568, 24614, 24986, 25805, 26908, 27790, 28210, 33635, 36127, 38440, 41288, 49228, 49972, 51610, 53816, 55580, 56420, 61535, 62465, 67270, 72254, 86149, 87451, 98456, 99944, 103220, 111160, 112840, 123070, 124930, 134540, 144508, 159991, 172298, 174902, 180635, 206440, 246140, 249860, 269080, 289016, 319982, 344596, 349804, 361270, 381517, 430745, 437255, 492280, 499720, 639964, 689192, 699608, 722540, 763034, 799955, 861490, 874510, 1119937, 1279928, 1445080, 1526068, 1599910, 1722980, 1749020, 1907585, 2239874, 2670619, 3052136, 3199820, 3445960, 3498040, 3815170, 4479748, 4959721, 5341238, 5599685, 6399640, 7630340, 8959496, 9919442, 10682476, 11199370, 13353095, 15260680, 19838884, 21364952, 22398740, 24798605, 26706190, 34718047, 39677768, 44797480, 49597210, 53412380, 69436094, 99194420, 106824760, 138872188, 173590235, 198388840, 277744376, 347180470, 694360940, 1388721880]

約数ペア:

[(1, 1388721880), (2, 694360940), (4, 347180470), (5, 277744376), (7, 198388840), (8, 173590235), (10, 138872188), (13, 106824760), (14, 99194420), (20, 69436094), (26, 53412380), (28, 49597210), (31, 44797480), (35, 39677768), (40, 34718047), (52, 26706190), (56, 24798605), (62, 22398740), (65, 21364952), (70, 19838884), (91, 15260680), (104, 13353095), (124, 11199370), (130, 10682476), (140, 9919442), (155, 8959496), (182, 7630340), (217, 6399640), (248, 5599685), (260, 5341238), (280, 4959721), (310, 4479748), (364, 3815170), (397, 3498040), (403, 3445960), (434, 3199820), (455, 3052136), (520, 2670619), (620, 2239874), (728, 1907585), (794, 1749020), (806, 1722980), (868, 1599910), (910, 1526068), (961, 1445080), (1085, 1279928), (1240, 1119937), (1588, 874510), (1612, 861490), (1736, 799955), (1820, 763034), (1922, 722540), (1985, 699608), (2015, 689192), (2170, 639964), (2779, 499720), (2821, 492280), (3176, 437255), (3224, 430745), (3640, 381517), (3844, 361270), (3970, 349804), (4030, 344596), (4340, 319982), (4805, 289016), (5161, 269080), (5558, 249860), (5642, 246140), (6727, 206440), (7688, 180635), (7940, 174902), (8060, 172298), (8680, 159991), (9610, 144508), (10322, 134540), (11116, 124930), (11284, 123070), (12307, 112840), (12493, 111160), (13454, 103220), (13895, 99944), (14105, 98456), (15880, 87451), (16120, 86149), (19220, 72254), (20644, 67270), (22232, 62465), (22568, 61535), (24614, 56420), (24986, 55580), (25805, 53816), (26908, 51610), (27790, 49972), (28210, 49228), (33635, 41288), (36127, 38440)]