21975460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{84521}}^1$

素因数の和:84543

約数の個数: 24

約数和(自身を含む): 49698936

約数和(自身を除く): 27723476

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 84521, 169042, 338084, 422605, 845210, 1098773, 1690420, 2197546, 4395092, 5493865, 10987730, 21975460]

約数ペア:

[(1, 21975460), (2, 10987730), (4, 5493865), (5, 4395092), (10, 2197546), (13, 1690420), (20, 1098773), (26, 845210), (52, 422605), (65, 338084), (130, 169042), (260, 84521)]