21399736

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{157351}}^1$

素因数の和:157374

約数の個数: 16

約数和(自身を含む): 42485040

約数和(自身を除く): 21085304

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 157351, 314702, 629404, 1258808, 2674967, 5349934, 10699868, 21399736]

約数ペア:

[(1, 21399736), (2, 10699868), (4, 5349934), (8, 2674967), (17, 1258808), (34, 629404), (68, 314702), (136, 157351)]