77987960

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{67231}}^1$

素因数の和:67271

約数の個数: 32

約数和(自身を含む): 181526400

約数和(自身を除く): 103538440

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 67231, 134462, 268924, 336155, 537848, 672310, 1344620, 1949699, 2689240, 3899398, 7798796, 9748495, 15597592, 19496990, 38993980, 77987960]

約数ペア:

[(1, 77987960), (2, 38993980), (4, 19496990), (5, 15597592), (8, 9748495), (10, 7798796), (20, 3899398), (29, 2689240), (40, 1949699), (58, 1344620), (116, 672310), (145, 537848), (232, 336155), (290, 268924), (580, 134462), (1160, 67231)]