129111280

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{659}}^1$

素因数の和:782

約数の個数: 80

約数和(自身を含む): 314265600

約数和(自身を除く): 185154320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 79, 80, 124, 155, 158, 248, 310, 316, 395, 496, 620, 632, 659, 790, 1240, 1264, 1318, 1580, 2449, 2480, 2636, 3160, 3295, 4898, 5272, 6320, 6590, 9796, 10544, 12245, 13180, 19592, 20429, 24490, 26360, 39184, 40858, 48980, 52061, 52720, 81716, 97960, 102145, 104122, 163432, 195920, 204290, 208244, 260305, 326864, 408580, 416488, 520610, 817160, 832976, 1041220, 1613891, 1634320, 2082440, 3227782, 4164880, 6455564, 8069455, 12911128, 16138910, 25822256, 32277820, 64555640, 129111280]

約数ペア:

[(1, 129111280), (2, 64555640), (4, 32277820), (5, 25822256), (8, 16138910), (10, 12911128), (16, 8069455), (20, 6455564), (31, 4164880), (40, 3227782), (62, 2082440), (79, 1634320), (80, 1613891), (124, 1041220), (155, 832976), (158, 817160), (248, 520610), (310, 416488), (316, 408580), (395, 326864), (496, 260305), (620, 208244), (632, 204290), (659, 195920), (790, 163432), (1240, 104122), (1264, 102145), (1318, 97960), (1580, 81716), (2449, 52720), (2480, 52061), (2636, 48980), (3160, 40858), (3295, 39184), (4898, 26360), (5272, 24490), (6320, 20429), (6590, 19592), (9796, 13180), (10544, 12245)]