21640852

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{877}}^1$

素因数の和:1111

約数の個数: 24

約数和(自身を含む): 39334400

約数和(自身を除く): 17693548

約数列:

[1, 2, 4, 31, 62, 124, 199, 398, 796, 877, 1754, 3508, 6169, 12338, 24676, 27187, 54374, 108748, 174523, 349046, 698092, 5410213, 10820426, 21640852]

約数ペア:

[(1, 21640852), (2, 10820426), (4, 5410213), (31, 698092), (62, 349046), (124, 174523), (199, 108748), (398, 54374), (796, 27187), (877, 24676), (1754, 12338), (3508, 6169)]