18239540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{7537}}^1$

素因数の和:7568

約数の個数: 36

約数和(自身を含む): 42107268

約数和(自身を除く): 23867728

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 7537, 15074, 30148, 37685, 75370, 82907, 150740, 165814, 331628, 414535, 829070, 911977, 1658140, 1823954, 3647908, 4559885, 9119770, 18239540]

約数ペア:

[(1, 18239540), (2, 9119770), (4, 4559885), (5, 3647908), (10, 1823954), (11, 1658140), (20, 911977), (22, 829070), (44, 414535), (55, 331628), (110, 165814), (121, 150740), (220, 82907), (242, 75370), (484, 37685), (605, 30148), (1210, 15074), (2420, 7537)]