31307980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{1409}}^1$

素因数の和:1530

約数の個数: 48

約数和(自身を含む): 72485280

約数和(自身を除く): 41177300

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 101, 110, 202, 220, 404, 505, 1010, 1111, 1409, 2020, 2222, 2818, 4444, 5555, 5636, 7045, 11110, 14090, 15499, 22220, 28180, 30998, 61996, 77495, 142309, 154990, 284618, 309980, 569236, 711545, 1423090, 1565399, 2846180, 3130798, 6261596, 7826995, 15653990, 31307980]

約数ペア:

[(1, 31307980), (2, 15653990), (4, 7826995), (5, 6261596), (10, 3130798), (11, 2846180), (20, 1565399), (22, 1423090), (44, 711545), (55, 569236), (101, 309980), (110, 284618), (202, 154990), (220, 142309), (404, 77495), (505, 61996), (1010, 30998), (1111, 28180), (1409, 22220), (2020, 15499), (2222, 14090), (2818, 11110), (4444, 7045), (5555, 5636)]