81887820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^3\times {\mathrm{23}}^1\times {\mathrm{173}}^1$

素因数の和:229

約数の個数: 192

約数和(自身を含む): 280627200

約数和(自身を除く): 198739380

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 23, 28, 30, 35, 42, 46, 49, 60, 69, 70, 84, 92, 98, 105, 115, 138, 140, 147, 161, 173, 196, 210, 230, 245, 276, 294, 322, 343, 345, 346, 420, 460, 483, 490, 519, 588, 644, 686, 690, 692, 735, 805, 865, 966, 980, 1029, 1038, 1127, 1211, 1372, 1380, 1470, 1610, 1715, 1730, 1932, 2058, 2076, 2254, 2415, 2422, 2595, 2940, 3220, 3381, 3430, 3460, 3633, 3979, 4116, 4508, 4830, 4844, 5145, 5190, 5635, 6055, 6762, 6860, 7266, 7889, 7958, 8477, 9660, 10290, 10380, 11270, 11937, 12110, 13524, 14532, 15778, 15916, 16905, 16954, 18165, 19895, 20580, 22540, 23667, 23874, 24220, 25431, 27853, 31556, 33810, 33908, 36330, 39445, 39790, 42385, 47334, 47748, 50862, 55706, 59339, 59685, 67620, 72660, 78890, 79580, 83559, 84770, 94668, 101724, 111412, 118335, 118678, 119370, 127155, 139265, 157780, 167118, 169540, 178017, 194971, 236670, 237356, 238740, 254310, 278530, 296695, 334236, 356034, 389942, 417795, 473340, 508620, 557060, 584913, 593390, 712068, 779884, 835590, 890085, 974855, 1169826, 1186780, 1364797, 1671180, 1780170, 1949710, 2339652, 2729594, 2924565, 3560340, 3899420, 4094391, 5459188, 5849130, 6823985, 8188782, 11698260, 13647970, 16377564, 20471955, 27295940, 40943910, 81887820]

約数ペア:

[(1, 81887820), (2, 40943910), (3, 27295940), (4, 20471955), (5, 16377564), (6, 13647970), (7, 11698260), (10, 8188782), (12, 6823985), (14, 5849130), (15, 5459188), (20, 4094391), (21, 3899420), (23, 3560340), (28, 2924565), (30, 2729594), (35, 2339652), (42, 1949710), (46, 1780170), (49, 1671180), (60, 1364797), (69, 1186780), (70, 1169826), (84, 974855), (92, 890085), (98, 835590), (105, 779884), (115, 712068), (138, 593390), (140, 584913), (147, 557060), (161, 508620), (173, 473340), (196, 417795), (210, 389942), (230, 356034), (245, 334236), (276, 296695), (294, 278530), (322, 254310), (343, 238740), (345, 237356), (346, 236670), (420, 194971), (460, 178017), (483, 169540), (490, 167118), (519, 157780), (588, 139265), (644, 127155), (686, 119370), (690, 118678), (692, 118335), (735, 111412), (805, 101724), (865, 94668), (966, 84770), (980, 83559), (1029, 79580), (1038, 78890), (1127, 72660), (1211, 67620), (1372, 59685), (1380, 59339), (1470, 55706), (1610, 50862), (1715, 47748), (1730, 47334), (1932, 42385), (2058, 39790), (2076, 39445), (2254, 36330), (2415, 33908), (2422, 33810), (2595, 31556), (2940, 27853), (3220, 25431), (3381, 24220), (3430, 23874), (3460, 23667), (3633, 22540), (3979, 20580), (4116, 19895), (4508, 18165), (4830, 16954), (4844, 16905), (5145, 15916), (5190, 15778), (5635, 14532), (6055, 13524), (6762, 12110), (6860, 11937), (7266, 11270), (7889, 10380), (7958, 10290), (8477, 9660)]