18637960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{42359}}^1$

素因数の和:42381

約数の個数: 32

約数和(自身を含む): 45748800

約数和(自身を除く): 27110840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 42359, 84718, 169436, 211795, 338872, 423590, 465949, 847180, 931898, 1694360, 1863796, 2329745, 3727592, 4659490, 9318980, 18637960]

約数ペア:

[(1, 18637960), (2, 9318980), (4, 4659490), (5, 3727592), (8, 2329745), (10, 1863796), (11, 1694360), (20, 931898), (22, 847180), (40, 465949), (44, 423590), (55, 338872), (88, 211795), (110, 169436), (220, 84718), (440, 42359)]