19880580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{2609}}^1$

素因数の和:2748

約数の個数: 48

約数和(自身を含む): 56125440

約数和(自身を除く): 36244860

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 127, 254, 381, 508, 635, 762, 1270, 1524, 1905, 2540, 2609, 3810, 5218, 7620, 7827, 10436, 13045, 15654, 26090, 31308, 39135, 52180, 78270, 156540, 331343, 662686, 994029, 1325372, 1656715, 1988058, 3313430, 3976116, 4970145, 6626860, 9940290, 19880580]

約数ペア:

[(1, 19880580), (2, 9940290), (3, 6626860), (4, 4970145), (5, 3976116), (6, 3313430), (10, 1988058), (12, 1656715), (15, 1325372), (20, 994029), (30, 662686), (60, 331343), (127, 156540), (254, 78270), (381, 52180), (508, 39135), (635, 31308), (762, 26090), (1270, 15654), (1524, 13045), (1905, 10436), (2540, 7827), (2609, 7620), (3810, 5218)]