18816820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{85531}}^1$

素因数の和:85551

約数の個数: 24

約数和(自身を含む): 43108128

約数和(自身を除く): 24291308

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 85531, 171062, 342124, 427655, 855310, 940841, 1710620, 1881682, 3763364, 4704205, 9408410, 18816820]

約数ペア:

[(1, 18816820), (2, 9408410), (4, 4704205), (5, 3763364), (10, 1881682), (11, 1710620), (20, 940841), (22, 855310), (44, 427655), (55, 342124), (110, 171062), (220, 85531)]