78877240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{151687}}^1$

素因数の和:151711

約数の個数: 32

約数和(自身を含む): 191126880

約数和(自身を除く): 112249640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 151687, 303374, 606748, 758435, 1213496, 1516870, 1971931, 3033740, 3943862, 6067480, 7887724, 9859655, 15775448, 19719310, 39438620, 78877240]

約数ペア:

[(1, 78877240), (2, 39438620), (4, 19719310), (5, 15775448), (8, 9859655), (10, 7887724), (13, 6067480), (20, 3943862), (26, 3033740), (40, 1971931), (52, 1516870), (65, 1213496), (104, 758435), (130, 606748), (260, 303374), (520, 151687)]