64628680

素因数分解:

$2^3\times 5^1\times {\mathrm{1615717}}^1$

素因数の和:1615728

約数の個数: 16

約数和(自身を含む): 145414620

約数和(自身を除く): 80785940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1615717, 3231434, 6462868, 8078585, 12925736, 16157170, 32314340, 64628680]

約数ペア:

[(1, 64628680), (2, 32314340), (4, 16157170), (5, 12925736), (8, 8078585), (10, 6462868), (20, 3231434), (40, 1615717)]