21946940

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{2683}}^1$

素因数の和:3101

約数の個数: 24

約数和(自身を含む): 46218480

約数和(自身を除く): 24271540

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 1636, 2045, 2683, 4090, 5366, 8180, 10732, 13415, 26830, 53660, 1097347, 2194694, 4389388, 5486735, 10973470, 21946940]

約数ペア:

[(1, 21946940), (2, 10973470), (4, 5486735), (5, 4389388), (10, 2194694), (20, 1097347), (409, 53660), (818, 26830), (1636, 13415), (2045, 10732), (2683, 8180), (4090, 5366)]