18980240

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{12487}}^1$

素因数の和:12519

約数の個数: 40

約数和(自身を含む): 46455360

約数和(自身を除く): 27475120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 12487, 24974, 49948, 62435, 99896, 124870, 199792, 237253, 249740, 474506, 499480, 949012, 998960, 1186265, 1898024, 2372530, 3796048, 4745060, 9490120, 18980240]

約数ペア:

[(1, 18980240), (2, 9490120), (4, 4745060), (5, 3796048), (8, 2372530), (10, 1898024), (16, 1186265), (19, 998960), (20, 949012), (38, 499480), (40, 474506), (76, 249740), (80, 237253), (95, 199792), (152, 124870), (190, 99896), (304, 62435), (380, 49948), (760, 24974), (1520, 12487)]