21640234

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{140521}}^1$

素因数の和:140541

約数の個数: 16

約数和(自身を含む): 40470336

約数和(自身を除く): 18830102

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 140521, 281042, 983647, 1545731, 1967294, 3091462, 10820117, 21640234]

約数ペア:

[(1, 21640234), (2, 10820117), (7, 3091462), (11, 1967294), (14, 1545731), (22, 983647), (77, 281042), (154, 140521)]