19689980

素因数分解:

$2^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{4337}}^1$

素因数の和:4573

約数の個数: 24

約数和(自身を含む): 41540688

約数和(自身を除く): 21850708

約数列:

[1, 2, 4, 5, 10, 20, 227, 454, 908, 1135, 2270, 4337, 4540, 8674, 17348, 21685, 43370, 86740, 984499, 1968998, 3937996, 4922495, 9844990, 19689980]

約数ペア:

[(1, 19689980), (2, 9844990), (4, 4922495), (5, 3937996), (10, 1968998), (20, 984499), (227, 86740), (454, 43370), (908, 21685), (1135, 17348), (2270, 8674), (4337, 4540)]