20784290

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109391}}^1$

素因数の和:109417

約数の個数: 16

約数和(自身を含む): 39381120

約数和(自身を除く): 18596830

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 109391, 218782, 546955, 1093910, 2078429, 4156858, 10392145, 20784290]

約数ペア:

[(1, 20784290), (2, 10392145), (5, 4156858), (10, 2078429), (19, 1093910), (38, 546955), (95, 218782), (190, 109391)]