64721540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1$

素因数の和:261

約数の個数: 96

約数和(自身を含む): 155796480

約数和(自身を除く): 91074940

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 52, 65, 79, 92, 115, 130, 137, 158, 230, 260, 274, 299, 316, 395, 460, 548, 598, 685, 790, 1027, 1196, 1370, 1495, 1580, 1781, 1817, 2054, 2740, 2990, 3151, 3562, 3634, 4108, 5135, 5980, 6302, 7124, 7268, 8905, 9085, 10270, 10823, 12604, 15755, 17810, 18170, 20540, 21646, 23621, 31510, 35620, 36340, 40963, 43292, 47242, 54115, 63020, 81926, 94484, 108230, 118105, 140699, 163852, 204815, 216460, 236210, 248929, 281398, 409630, 472420, 497858, 562796, 703495, 819260, 995716, 1244645, 1406990, 2489290, 2813980, 3236077, 4978580, 6472154, 12944308, 16180385, 32360770, 64721540]

約数ペア:

[(1, 64721540), (2, 32360770), (4, 16180385), (5, 12944308), (10, 6472154), (13, 4978580), (20, 3236077), (23, 2813980), (26, 2489290), (46, 1406990), (52, 1244645), (65, 995716), (79, 819260), (92, 703495), (115, 562796), (130, 497858), (137, 472420), (158, 409630), (230, 281398), (260, 248929), (274, 236210), (299, 216460), (316, 204815), (395, 163852), (460, 140699), (548, 118105), (598, 108230), (685, 94484), (790, 81926), (1027, 63020), (1196, 54115), (1370, 47242), (1495, 43292), (1580, 40963), (1781, 36340), (1817, 35620), (2054, 31510), (2740, 23621), (2990, 21646), (3151, 20540), (3562, 18170), (3634, 17810), (4108, 15755), (5135, 12604), (5980, 10823), (6302, 10270), (7124, 9085), (7268, 8905)]