21704164

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{257}}^1\times {\mathrm{491}}^1$

素因数の和:795

約数の個数: 24

約数和(自身を含む): 39096288

約数和(自身を除く): 17392124

約数列:

[1, 2, 4, 43, 86, 172, 257, 491, 514, 982, 1028, 1964, 11051, 21113, 22102, 42226, 44204, 84452, 126187, 252374, 504748, 5426041, 10852082, 21704164]

約数ペア:

[(1, 21704164), (2, 10852082), (4, 5426041), (43, 504748), (86, 252374), (172, 126187), (257, 84452), (491, 44204), (514, 42226), (982, 22102), (1028, 21113), (1964, 11051)]