64996640

素因数分解:

$2^5\times 5^1\times {\mathrm{271}}^1\times {\mathrm{1499}}^1$

素因数の和:1785

約数の個数: 48

約数和(自身を含む): 154224000

約数和(自身を除く): 89227360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 271, 542, 1084, 1355, 1499, 2168, 2710, 2998, 4336, 5420, 5996, 7495, 8672, 10840, 11992, 14990, 21680, 23984, 29980, 43360, 47968, 59960, 119920, 239840, 406229, 812458, 1624916, 2031145, 3249832, 4062290, 6499664, 8124580, 12999328, 16249160, 32498320, 64996640]

約数ペア:

[(1, 64996640), (2, 32498320), (4, 16249160), (5, 12999328), (8, 8124580), (10, 6499664), (16, 4062290), (20, 3249832), (32, 2031145), (40, 1624916), (80, 812458), (160, 406229), (271, 239840), (542, 119920), (1084, 59960), (1355, 47968), (1499, 43360), (2168, 29980), (2710, 23984), (2998, 21680), (4336, 14990), (5420, 11992), (5996, 10840), (7495, 8672)]