20255234920

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2213}}^1\times {\mathrm{5581}}^1$

素因数の和:7846

約数の個数: 64

約数和(自身を含む): 46715311440

約数和(自身を除く): 26460076520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 2213, 4426, 5581, 8852, 11065, 11162, 17704, 22130, 22324, 27905, 44260, 44648, 55810, 88520, 90733, 111620, 181466, 223240, 228821, 362932, 453665, 457642, 725864, 907330, 915284, 1144105, 1814660, 1830568, 2288210, 3629320, 4576420, 9152840, 12350753, 24701506, 49403012, 61753765, 98806024, 123507530, 247015060, 494030120, 506380873, 1012761746, 2025523492, 2531904365, 4051046984, 5063808730, 10127617460, 20255234920]

約数ペア:

[(1, 20255234920), (2, 10127617460), (4, 5063808730), (5, 4051046984), (8, 2531904365), (10, 2025523492), (20, 1012761746), (40, 506380873), (41, 494030120), (82, 247015060), (164, 123507530), (205, 98806024), (328, 61753765), (410, 49403012), (820, 24701506), (1640, 12350753), (2213, 9152840), (4426, 4576420), (5581, 3629320), (8852, 2288210), (11065, 1830568), (11162, 1814660), (17704, 1144105), (22130, 915284), (22324, 907330), (27905, 725864), (44260, 457642), (44648, 453665), (55810, 362932), (88520, 228821), (90733, 223240), (111620, 181466)]