20490180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{2689}}^1$

素因数の和:2828

約数の個数: 48

約数和(自身を含む): 57845760

約数和(自身を除く): 37355580

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, 2689, 3810, 5378, 7620, 8067, 10756, 13445, 16134, 26890, 32268, 40335, 53780, 80670, 161340, 341503, 683006, 1024509, 1366012, 1707515, 2049018, 3415030, 4098036, 5122545, 6830060, 10245090, 20490180]

約数ペア:

[(1, 20490180), (2, 10245090), (3, 6830060), (4, 5122545), (5, 4098036), (6, 3415030), (10, 2049018), (12, 1707515), (15, 1366012), (20, 1024509), (30, 683006), (60, 341503), (127, 161340), (254, 80670), (381, 53780), (508, 40335), (635, 32268), (762, 26890), (1270, 16134), (1524, 13445), (1905, 10756), (2540, 8067), (2689, 7620), (3810, 5378)]