20074528840

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1621}}^1\times {\mathrm{3919}}^1$

素因数の和:5630

約数の個数: 64

約数和(自身を含む): 45779328000

約数和(自身を除く): 25704799160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 1621, 3160, 3242, 3919, 6484, 7838, 8105, 12968, 15676, 16210, 19595, 31352, 32420, 39190, 64840, 78380, 128059, 156760, 256118, 309601, 512236, 619202, 640295, 1024472, 1238404, 1280590, 1548005, 2476808, 2561180, 3096010, 5122360, 6192020, 6352699, 12384040, 12705398, 25410796, 31763495, 50821592, 63526990, 127053980, 254107960, 501863221, 1003726442, 2007452884, 2509316105, 4014905768, 5018632210, 10037264420, 20074528840]

約数ペア:

[(1, 20074528840), (2, 10037264420), (4, 5018632210), (5, 4014905768), (8, 2509316105), (10, 2007452884), (20, 1003726442), (40, 501863221), (79, 254107960), (158, 127053980), (316, 63526990), (395, 50821592), (632, 31763495), (790, 25410796), (1580, 12705398), (1621, 12384040), (3160, 6352699), (3242, 6192020), (3919, 5122360), (6484, 3096010), (7838, 2561180), (8105, 2476808), (12968, 1548005), (15676, 1280590), (16210, 1238404), (19595, 1024472), (31352, 640295), (32420, 619202), (39190, 512236), (64840, 309601), (78380, 256118), (128059, 156760)]