19807715

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{4201}}^1$

素因数の和:4270

約数の個数: 16

約数和(自身を含む): 25413696

約数和(自身を除く): 5605981

約数列:

[1, 5, 23, 41, 115, 205, 943, 4201, 4715, 21005, 96623, 172241, 483115, 861205, 3961543, 19807715]

約数ペア:

[(1, 19807715), (5, 3961543), (23, 861205), (41, 483115), (115, 172241), (205, 96623), (943, 21005), (4201, 4715)]