21196390

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73091}}^1$

素因数の和:73127

約数の個数: 16

約数和(自身を含む): 39469680

約数和(自身を除く): 18273290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 73091, 146182, 365455, 730910, 2119639, 4239278, 10598195, 21196390]

約数ペア:

[(1, 21196390), (2, 10598195), (5, 4239278), (10, 2119639), (29, 730910), (58, 365455), (145, 146182), (290, 73091)]