21764715

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{3911}}^1$

素因数の和:3979

約数の個数: 32

約数和(自身を含む): 40559616

約数和(自身を除く): 18794901

約数列:

[1, 3, 5, 7, 15, 21, 35, 53, 105, 159, 265, 371, 795, 1113, 1855, 3911, 5565, 11733, 19555, 27377, 58665, 82131, 136885, 207283, 410655, 621849, 1036415, 1450981, 3109245, 4352943, 7254905, 21764715]

約数ペア:

[(1, 21764715), (3, 7254905), (5, 4352943), (7, 3109245), (15, 1450981), (21, 1036415), (35, 621849), (53, 410655), (105, 207283), (159, 136885), (265, 82131), (371, 58665), (795, 27377), (1113, 19555), (1855, 11733), (3911, 5565)]