127739960

素因数分解:

$2^3\times 5^1\times {\mathrm{151}}^1\times {\mathrm{21149}}^1$

素因数の和:21311

約数の個数: 32

約数和(自身を含む): 289332000

約数和(自身を除く): 161592040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 151, 302, 604, 755, 1208, 1510, 3020, 6040, 21149, 42298, 84596, 105745, 169192, 211490, 422980, 845960, 3193499, 6386998, 12773996, 15967495, 25547992, 31934990, 63869980, 127739960]

約数ペア:

[(1, 127739960), (2, 63869980), (4, 31934990), (5, 25547992), (8, 15967495), (10, 12773996), (20, 6386998), (40, 3193499), (151, 845960), (302, 422980), (604, 211490), (755, 169192), (1208, 105745), (1510, 84596), (3020, 42298), (6040, 21149)]