20428540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{92857}}^1$

素因数の和:92877

約数の個数: 24

約数和(自身を含む): 46800432

約数和(自身を除く): 26371892

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 92857, 185714, 371428, 464285, 928570, 1021427, 1857140, 2042854, 4085708, 5107135, 10214270, 20428540]

約数ペア:

[(1, 20428540), (2, 10214270), (4, 5107135), (5, 4085708), (10, 2042854), (11, 1857140), (20, 1021427), (22, 928570), (44, 464285), (55, 371428), (110, 185714), (220, 92857)]