21876560

素因数分解:

$2^4\times 5^1\times {\mathrm{273457}}^1$

素因数の和:273470

約数の個数: 20

約数和(自身を含む): 50863188

約数和(自身を除く): 28986628

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 273457, 546914, 1093828, 1367285, 2187656, 2734570, 4375312, 5469140, 10938280, 21876560]

約数ペア:

[(1, 21876560), (2, 10938280), (4, 5469140), (5, 4375312), (8, 2734570), (10, 2187656), (16, 1367285), (20, 1093828), (40, 546914), (80, 273457)]