19858760

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{12109}}^1$

素因数の和:12161

約数の個数: 32

約数和(自身を含む): 45775800

約数和(自身を除く): 25917040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 12109, 24218, 48436, 60545, 96872, 121090, 242180, 484360, 496469, 992938, 1985876, 2482345, 3971752, 4964690, 9929380, 19858760]

約数ペア:

[(1, 19858760), (2, 9929380), (4, 4964690), (5, 3971752), (8, 2482345), (10, 1985876), (20, 992938), (40, 496469), (41, 484360), (82, 242180), (164, 121090), (205, 96872), (328, 60545), (410, 48436), (820, 24218), (1640, 12109)]