81555240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2273}}^1$

素因数の和:2323

約数の個数: 128

約数和(自身を含む): 275063040

約数和(自身を除く): 193507800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 23, 24, 26, 30, 39, 40, 46, 52, 60, 65, 69, 78, 92, 104, 115, 120, 130, 138, 156, 184, 195, 230, 260, 276, 299, 312, 345, 390, 460, 520, 552, 598, 690, 780, 897, 920, 1196, 1380, 1495, 1560, 1794, 2273, 2392, 2760, 2990, 3588, 4485, 4546, 5980, 6819, 7176, 8970, 9092, 11365, 11960, 13638, 17940, 18184, 22730, 27276, 29549, 34095, 35880, 45460, 52279, 54552, 59098, 68190, 88647, 90920, 104558, 118196, 136380, 147745, 156837, 177294, 209116, 236392, 261395, 272760, 295490, 313674, 354588, 418232, 443235, 522790, 590980, 627348, 679627, 709176, 784185, 886470, 1045580, 1181960, 1254696, 1359254, 1568370, 1772940, 2038881, 2091160, 2718508, 3136740, 3398135, 3545880, 4077762, 5437016, 6273480, 6796270, 8155524, 10194405, 13592540, 16311048, 20388810, 27185080, 40777620, 81555240]

約数ペア:

[(1, 81555240), (2, 40777620), (3, 27185080), (4, 20388810), (5, 16311048), (6, 13592540), (8, 10194405), (10, 8155524), (12, 6796270), (13, 6273480), (15, 5437016), (20, 4077762), (23, 3545880), (24, 3398135), (26, 3136740), (30, 2718508), (39, 2091160), (40, 2038881), (46, 1772940), (52, 1568370), (60, 1359254), (65, 1254696), (69, 1181960), (78, 1045580), (92, 886470), (104, 784185), (115, 709176), (120, 679627), (130, 627348), (138, 590980), (156, 522790), (184, 443235), (195, 418232), (230, 354588), (260, 313674), (276, 295490), (299, 272760), (312, 261395), (345, 236392), (390, 209116), (460, 177294), (520, 156837), (552, 147745), (598, 136380), (690, 118196), (780, 104558), (897, 90920), (920, 88647), (1196, 68190), (1380, 59098), (1495, 54552), (1560, 52279), (1794, 45460), (2273, 35880), (2392, 34095), (2760, 29549), (2990, 27276), (3588, 22730), (4485, 18184), (4546, 17940), (5980, 13638), (6819, 11960), (7176, 11365), (8970, 9092)]