19855480

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{12107}}^1$

素因数の和:12159

約数の個数: 32

約数和(自身を含む): 45768240

約数和(自身を除く): 25912760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 12107, 24214, 48428, 60535, 96856, 121070, 242140, 484280, 496387, 992774, 1985548, 2481935, 3971096, 4963870, 9927740, 19855480]

約数ペア:

[(1, 19855480), (2, 9927740), (4, 4963870), (5, 3971096), (8, 2481935), (10, 1985548), (20, 992774), (40, 496387), (41, 484280), (82, 242140), (164, 121070), (205, 96856), (328, 60535), (410, 48428), (820, 24214), (1640, 12107)]