20445621

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{13337}}^1$

素因数の和:13420

約数の個数: 16

約数和(自身を含む): 31584384

約数和(自身を除く): 11138763

約数列:

[1, 3, 7, 21, 73, 219, 511, 1533, 13337, 40011, 93359, 280077, 973601, 2920803, 6815207, 20445621]

約数ペア:

[(1, 20445621), (3, 6815207), (7, 2920803), (21, 973601), (73, 280077), (219, 93359), (511, 40011), (1533, 13337)]