21113885

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{487}}^1$

素因数の和:557

約数の個数: 32

約数和(自身を含む): 29514240

約数和(自身を除く): 8400355

約数列:

[1, 5, 13, 23, 29, 65, 115, 145, 299, 377, 487, 667, 1495, 1885, 2435, 3335, 6331, 8671, 11201, 14123, 31655, 43355, 56005, 70615, 145613, 183599, 324829, 728065, 917995, 1624145, 4222777, 21113885]

約数ペア:

[(1, 21113885), (5, 4222777), (13, 1624145), (23, 917995), (29, 728065), (65, 324829), (115, 183599), (145, 145613), (299, 70615), (377, 56005), (487, 43355), (667, 31655), (1495, 14123), (1885, 11201), (2435, 8671), (3335, 6331)]