668102500

素因数分解:

$2^2\times 5^4\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{337}}^1$

素因数の和:435

約数の個数: 120

約数和(自身を含む): 1603930328

約数和(自身を除く): 935827828

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 61, 65, 100, 122, 125, 130, 244, 250, 260, 305, 325, 337, 500, 610, 625, 650, 674, 793, 1220, 1250, 1300, 1348, 1525, 1586, 1625, 1685, 2500, 3050, 3172, 3250, 3370, 3965, 4381, 6100, 6500, 6740, 7625, 7930, 8125, 8425, 8762, 15250, 15860, 16250, 16850, 17524, 19825, 20557, 21905, 30500, 32500, 33700, 38125, 39650, 41114, 42125, 43810, 76250, 79300, 82228, 84250, 87620, 99125, 102785, 109525, 152500, 168500, 198250, 205570, 210625, 219050, 267241, 396500, 411140, 421250, 438100, 495625, 513925, 534482, 547625, 842500, 991250, 1027850, 1068964, 1095250, 1336205, 1982500, 2055700, 2190500, 2569625, 2672410, 2738125, 5139250, 5344820, 5476250, 6681025, 10278500, 10952500, 12848125, 13362050, 25696250, 26724100, 33405125, 51392500, 66810250, 133620500, 167025625, 334051250, 668102500]

約数ペア:

[(1, 668102500), (2, 334051250), (4, 167025625), (5, 133620500), (10, 66810250), (13, 51392500), (20, 33405125), (25, 26724100), (26, 25696250), (50, 13362050), (52, 12848125), (61, 10952500), (65, 10278500), (100, 6681025), (122, 5476250), (125, 5344820), (130, 5139250), (244, 2738125), (250, 2672410), (260, 2569625), (305, 2190500), (325, 2055700), (337, 1982500), (500, 1336205), (610, 1095250), (625, 1068964), (650, 1027850), (674, 991250), (793, 842500), (1220, 547625), (1250, 534482), (1300, 513925), (1348, 495625), (1525, 438100), (1586, 421250), (1625, 411140), (1685, 396500), (2500, 267241), (3050, 219050), (3172, 210625), (3250, 205570), (3370, 198250), (3965, 168500), (4381, 152500), (6100, 109525), (6500, 102785), (6740, 99125), (7625, 87620), (7930, 84250), (8125, 82228), (8425, 79300), (8762, 76250), (15250, 43810), (15860, 42125), (16250, 41114), (16850, 39650), (17524, 38125), (19825, 33700), (20557, 32500), (21905, 30500)]