20409896

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{443}}^2$

素因数の和:905

約数の個数: 24

約数和(自身を含む): 41305530

約数和(自身を除く): 20895634

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 443, 886, 1772, 3544, 5759, 11518, 23036, 46072, 196249, 392498, 784996, 1569992, 2551237, 5102474, 10204948, 20409896]

約数ペア:

[(1, 20409896), (2, 10204948), (4, 5102474), (8, 2551237), (13, 1569992), (26, 784996), (52, 392498), (104, 196249), (443, 46072), (886, 23036), (1772, 11518), (3544, 5759)]