18017780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{81899}}^1$

素因数の和:81919

約数の個数: 24

約数和(自身を含む): 41277600

約数和(自身を除く): 23259820

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 81899, 163798, 327596, 409495, 818990, 900889, 1637980, 1801778, 3603556, 4504445, 9008890, 18017780]

約数ペア:

[(1, 18017780), (2, 9008890), (4, 4504445), (5, 3603556), (10, 1801778), (11, 1637980), (20, 900889), (22, 818990), (44, 409495), (55, 327596), (110, 163798), (220, 81899)]