205125080

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1\times {\mathrm{467}}^1$

素因数の和:696

約数の個数: 64

約数和(自身を含む): 471744000

約数和(自身を除く): 266618920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 139, 158, 278, 316, 395, 467, 556, 632, 695, 790, 934, 1112, 1390, 1580, 1868, 2335, 2780, 3160, 3736, 4670, 5560, 9340, 10981, 18680, 21962, 36893, 43924, 54905, 64913, 73786, 87848, 109810, 129826, 147572, 184465, 219620, 259652, 295144, 324565, 368930, 439240, 519304, 649130, 737860, 1298260, 1475720, 2596520, 5128127, 10256254, 20512508, 25640635, 41025016, 51281270, 102562540, 205125080]

約数ペア:

[(1, 205125080), (2, 102562540), (4, 51281270), (5, 41025016), (8, 25640635), (10, 20512508), (20, 10256254), (40, 5128127), (79, 2596520), (139, 1475720), (158, 1298260), (278, 737860), (316, 649130), (395, 519304), (467, 439240), (556, 368930), (632, 324565), (695, 295144), (790, 259652), (934, 219620), (1112, 184465), (1390, 147572), (1580, 129826), (1868, 109810), (2335, 87848), (2780, 73786), (3160, 64913), (3736, 54905), (4670, 43924), (5560, 36893), (9340, 21962), (10981, 18680)]