18242620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{821}}^1$

素因数の和:942

約数の個数: 48

約数和(自身を含む): 42257376

約数和(自身を除く): 24014756

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 101, 110, 202, 220, 404, 505, 821, 1010, 1111, 1642, 2020, 2222, 3284, 4105, 4444, 5555, 8210, 9031, 11110, 16420, 18062, 22220, 36124, 45155, 82921, 90310, 165842, 180620, 331684, 414605, 829210, 912131, 1658420, 1824262, 3648524, 4560655, 9121310, 18242620]

約数ペア:

[(1, 18242620), (2, 9121310), (4, 4560655), (5, 3648524), (10, 1824262), (11, 1658420), (20, 912131), (22, 829210), (44, 414605), (55, 331684), (101, 180620), (110, 165842), (202, 90310), (220, 82921), (404, 45155), (505, 36124), (821, 22220), (1010, 18062), (1111, 16420), (1642, 11110), (2020, 9031), (2222, 8210), (3284, 5555), (4105, 4444)]