18220180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{7529}}^1$

素因数の和:7560

約数の個数: 36

約数和(自身を含む): 42062580

約数和(自身を除く): 23842400

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 7529, 15058, 30116, 37645, 75290, 82819, 150580, 165638, 331276, 414095, 828190, 911009, 1656380, 1822018, 3644036, 4555045, 9110090, 18220180]

約数ペア:

[(1, 18220180), (2, 9110090), (4, 4555045), (5, 3644036), (10, 1822018), (11, 1656380), (20, 911009), (22, 828190), (44, 414095), (55, 331276), (110, 165638), (121, 150580), (220, 82819), (242, 75290), (484, 37645), (605, 30116), (1210, 15058), (2420, 7529)]