100805420

素因数分解:

$2^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{21089}}^1$

素因数の和:21337

約数の個数: 24

約数和(自身を含む): 212587200

約数和(自身を除く): 111781780

約数列:

[1, 2, 4, 5, 10, 20, 239, 478, 956, 1195, 2390, 4780, 21089, 42178, 84356, 105445, 210890, 421780, 5040271, 10080542, 20161084, 25201355, 50402710, 100805420]

約数ペア:

[(1, 100805420), (2, 50402710), (4, 25201355), (5, 20161084), (10, 10080542), (20, 5040271), (239, 421780), (478, 210890), (956, 105445), (1195, 84356), (2390, 42178), (4780, 21089)]