21871234

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{12911}}^1$

素因数の和:12942

約数の個数: 24

約数和(自身を含む): 41215104

約数和(自身を除く): 19343870

約数列:

[1, 2, 7, 11, 14, 22, 77, 121, 154, 242, 847, 1694, 12911, 25822, 90377, 142021, 180754, 284042, 994147, 1562231, 1988294, 3124462, 10935617, 21871234]

約数ペア:

[(1, 21871234), (2, 10935617), (7, 3124462), (11, 1988294), (14, 1562231), (22, 994147), (77, 284042), (121, 180754), (154, 142021), (242, 90377), (847, 25822), (1694, 12911)]