18732520

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{10891}}^1$

素因数の和:10945

約数の個数: 32

約数和(自身を含む): 43132320

約数和(自身を除く): 24399800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 10891, 21782, 43564, 54455, 87128, 108910, 217820, 435640, 468313, 936626, 1873252, 2341565, 3746504, 4683130, 9366260, 18732520]

約数ペア:

[(1, 18732520), (2, 9366260), (4, 4683130), (5, 3746504), (8, 2341565), (10, 1873252), (20, 936626), (40, 468313), (43, 435640), (86, 217820), (172, 108910), (215, 87128), (344, 54455), (430, 43564), (860, 21782), (1720, 10891)]