20178879

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{13163}}^1$

素因数の和:13246

約数の個数: 16

約数和(自身を含む): 31172352

約数和(自身を除く): 10993473

約数列:

[1, 3, 7, 21, 73, 219, 511, 1533, 13163, 39489, 92141, 276423, 960899, 2882697, 6726293, 20178879]

約数ペア:

[(1, 20178879), (3, 6726293), (7, 2882697), (21, 960899), (73, 276423), (219, 92141), (511, 39489), (1533, 13163)]