20505865

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{1229}}^1$

素因数の和:1352

約数の個数: 16

約数和(自身を含む): 25505280

約数和(自身を除く): 4999415

約数列:

[1, 5, 47, 71, 235, 355, 1229, 3337, 6145, 16685, 57763, 87259, 288815, 436295, 4101173, 20505865]

約数ペア:

[(1, 20505865), (5, 4101173), (47, 436295), (71, 288815), (235, 87259), (355, 57763), (1229, 16685), (3337, 6145)]