64689220

素因数分解:

$2^2\times 5^1\times {\mathrm{241}}^1\times {\mathrm{13421}}^1$

素因数の和:13671

約数の個数: 24

約数和(自身を含む): 136421208

約数和(自身を除く): 71731988

約数列:

[1, 2, 4, 5, 10, 20, 241, 482, 964, 1205, 2410, 4820, 13421, 26842, 53684, 67105, 134210, 268420, 3234461, 6468922, 12937844, 16172305, 32344610, 64689220]

約数ペア:

[(1, 64689220), (2, 32344610), (4, 16172305), (5, 12937844), (10, 6468922), (20, 3234461), (241, 268420), (482, 134210), (964, 67105), (1205, 53684), (2410, 26842), (4820, 13421)]