21058915

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{1229}}^1$

素因数の和:1406

約数の個数: 16

約数和(自身を含む): 26568000

約数和(自身を除く): 5509085

約数列:

[1, 5, 23, 115, 149, 745, 1229, 3427, 6145, 17135, 28267, 141335, 183121, 915605, 4211783, 21058915]

約数ペア:

[(1, 21058915), (5, 4211783), (23, 915605), (115, 183121), (149, 141335), (745, 28267), (1229, 17135), (3427, 6145)]