20682945

素因数分解:

$3^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{587}}^1$

素因数の和:636

約数の個数: 48

約数和(自身を含む): 38525760

約数和(自身を除く): 17842815

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 81, 87, 135, 145, 243, 261, 405, 435, 587, 783, 1215, 1305, 1761, 2349, 2935, 3915, 5283, 7047, 8805, 11745, 15849, 17023, 26415, 35235, 47547, 51069, 79245, 85115, 142641, 153207, 237735, 255345, 459621, 713205, 766035, 1378863, 2298105, 4136589, 6894315, 20682945]

約数ペア:

[(1, 20682945), (3, 6894315), (5, 4136589), (9, 2298105), (15, 1378863), (27, 766035), (29, 713205), (45, 459621), (81, 255345), (87, 237735), (135, 153207), (145, 142641), (243, 85115), (261, 79245), (405, 51069), (435, 47547), (587, 35235), (783, 26415), (1215, 17023), (1305, 15849), (1761, 11745), (2349, 8805), (2935, 7047), (3915, 5283)]