21237002

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{229}}^1\times {\mathrm{521}}^1$

素因数の和:841

約数の個数: 16

約数和(自身を含む): 32416200

約数和(自身を除く): 11179198

約数列:

[1, 2, 89, 178, 229, 458, 521, 1042, 20381, 40762, 46369, 92738, 119309, 238618, 10618501, 21237002]

約数ペア:

[(1, 21237002), (2, 10618501), (89, 238618), (178, 119309), (229, 92738), (458, 46369), (521, 40762), (1042, 20381)]