21270140

素因数分解:

$2^2\times 5^1\times {\mathrm{563}}^1\times {\mathrm{1889}}^1$

素因数の和:2461

約数の個数: 24

約数和(自身を含む): 44770320

約数和(自身を除く): 23500180

約数列:

[1, 2, 4, 5, 10, 20, 563, 1126, 1889, 2252, 2815, 3778, 5630, 7556, 9445, 11260, 18890, 37780, 1063507, 2127014, 4254028, 5317535, 10635070, 21270140]

約数ペア:

[(1, 21270140), (2, 10635070), (4, 5317535), (5, 4254028), (10, 2127014), (20, 1063507), (563, 37780), (1126, 18890), (1889, 11260), (2252, 9445), (2815, 7556), (3778, 5630)]