21591340

素因数分解:

$2^2\times 5^1\times {\mathrm{577}}^1\times {\mathrm{1871}}^1$

素因数の和:2457

約数の個数: 24

約数和(自身を含む): 45444672

約数和(自身を除く): 23853332

約数列:

[1, 2, 4, 5, 10, 20, 577, 1154, 1871, 2308, 2885, 3742, 5770, 7484, 9355, 11540, 18710, 37420, 1079567, 2159134, 4318268, 5397835, 10795670, 21591340]

約数ペア:

[(1, 21591340), (2, 10795670), (4, 5397835), (5, 4318268), (10, 2159134), (20, 1079567), (577, 37420), (1154, 18710), (1871, 11540), (2308, 9355), (2885, 7484), (3742, 5770)]