21475940

素因数分解:

$2^2\times 5^1\times {\mathrm{577}}^1\times {\mathrm{1861}}^1$

素因数の和:2447

約数の個数: 24

約数和(自身を含む): 45201912

約数和(自身を除く): 23725972

約数列:

[1, 2, 4, 5, 10, 20, 577, 1154, 1861, 2308, 2885, 3722, 5770, 7444, 9305, 11540, 18610, 37220, 1073797, 2147594, 4295188, 5368985, 10737970, 21475940]

約数ペア:

[(1, 21475940), (2, 10737970), (4, 5368985), (5, 4295188), (10, 2147594), (20, 1073797), (577, 37220), (1154, 18610), (1861, 11540), (2308, 9305), (2885, 7444), (3722, 5770)]