639721928

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{113}}^1\times {\mathrm{9967}}^1$

素因数の和:10157

約数の個数: 32

約数和(自身を含む): 1227260160

約数和(自身を除く): 587538232

約数列:

[1, 2, 4, 8, 71, 113, 142, 226, 284, 452, 568, 904, 8023, 9967, 16046, 19934, 32092, 39868, 64184, 79736, 707657, 1126271, 1415314, 2252542, 2830628, 4505084, 5661256, 9010168, 79965241, 159930482, 319860964, 639721928]

約数ペア:

[(1, 639721928), (2, 319860964), (4, 159930482), (8, 79965241), (71, 9010168), (113, 5661256), (142, 4505084), (226, 2830628), (284, 2252542), (452, 1415314), (568, 1126271), (904, 707657), (8023, 79736), (9967, 64184), (16046, 39868), (19934, 32092)]