31399780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{4349}}^1$

素因数の和:4396

約数の個数: 36

約数和(自身を含む): 69608700

約数和(自身を除く): 38208920

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 3610, 4349, 7220, 8698, 17396, 21745, 43490, 82631, 86980, 165262, 330524, 413155, 826310, 1569989, 1652620, 3139978, 6279956, 7849945, 15699890, 31399780]

約数ペア:

[(1, 31399780), (2, 15699890), (4, 7849945), (5, 6279956), (10, 3139978), (19, 1652620), (20, 1569989), (38, 826310), (76, 413155), (95, 330524), (190, 165262), (361, 86980), (380, 82631), (722, 43490), (1444, 21745), (1805, 17396), (3610, 8698), (4349, 7220)]