64701640

素因数分解:

$2^3\times 5^1\times {\mathrm{1617541}}^1$

素因数の和:1617552

約数の個数: 16

約数和(自身を含む): 145578780

約数和(自身を除く): 80877140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1617541, 3235082, 6470164, 8087705, 12940328, 16175410, 32350820, 64701640]

約数ペア:

[(1, 64701640), (2, 32350820), (4, 16175410), (5, 12940328), (8, 8087705), (10, 6470164), (20, 3235082), (40, 1617541)]