18118540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{7487}}^1$

素因数の和:7518

約数の個数: 36

約数和(自身を含む): 41827968

約数和(自身を除く): 23709428

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 7487, 14974, 29948, 37435, 74870, 82357, 149740, 164714, 329428, 411785, 823570, 905927, 1647140, 1811854, 3623708, 4529635, 9059270, 18118540]

約数ペア:

[(1, 18118540), (2, 9059270), (4, 4529635), (5, 3623708), (10, 1811854), (11, 1647140), (20, 905927), (22, 823570), (44, 411785), (55, 329428), (110, 164714), (121, 149740), (220, 82357), (242, 74870), (484, 37435), (605, 29948), (1210, 14974), (2420, 7487)]