21909770

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{359}}^2$

素因数の和:742

約数の個数: 24

約数和(自身を含む): 41874084

約数和(自身を除く): 19964314

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 359, 718, 1795, 3590, 6103, 12206, 30515, 61030, 128881, 257762, 644405, 1288810, 2190977, 4381954, 10954885, 21909770]

約数ペア:

[(1, 21909770), (2, 10954885), (5, 4381954), (10, 2190977), (17, 1288810), (34, 644405), (85, 257762), (170, 128881), (359, 61030), (718, 30515), (1795, 12206), (3590, 6103)]