400180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1$

素因数の和:144

約数の個数: 48

約数和(自身を含む): 979776

約数和(自身を除く): 579596

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 107, 110, 170, 187, 214, 220, 340, 374, 428, 535, 748, 935, 1070, 1177, 1819, 1870, 2140, 2354, 3638, 3740, 4708, 5885, 7276, 9095, 11770, 18190, 20009, 23540, 36380, 40018, 80036, 100045, 200090, 400180]

約数ペア:

[(1, 400180), (2, 200090), (4, 100045), (5, 80036), (10, 40018), (11, 36380), (17, 23540), (20, 20009), (22, 18190), (34, 11770), (44, 9095), (55, 7276), (68, 5885), (85, 4708), (107, 3740), (110, 3638), (170, 2354), (187, 2140), (214, 1870), (220, 1819), (340, 1177), (374, 1070), (428, 935), (535, 748)]