20787490

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{1667}}^1$

素因数の和:1746

約数の個数: 32

約数和(自身を含む): 39631680

約数和(自身を除く): 18844190

約数列:

[1, 2, 5, 10, 29, 43, 58, 86, 145, 215, 290, 430, 1247, 1667, 2494, 3334, 6235, 8335, 12470, 16670, 48343, 71681, 96686, 143362, 241715, 358405, 483430, 716810, 2078749, 4157498, 10393745, 20787490]

約数ペア:

[(1, 20787490), (2, 10393745), (5, 4157498), (10, 2078749), (29, 716810), (43, 483430), (58, 358405), (86, 241715), (145, 143362), (215, 96686), (290, 71681), (430, 48343), (1247, 16670), (1667, 12470), (2494, 8335), (3334, 6235)]