21376940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{82219}}^1$

素因数の和:82241

約数の個数: 24

約数和(自身を含む): 48345360

約数和(自身を除く): 26968420

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 82219, 164438, 328876, 411095, 822190, 1068847, 1644380, 2137694, 4275388, 5344235, 10688470, 21376940]

約数ペア:

[(1, 21376940), (2, 10688470), (4, 5344235), (5, 4275388), (10, 2137694), (13, 1644380), (20, 1068847), (26, 822190), (52, 411095), (65, 328876), (130, 164438), (260, 82219)]