20912801

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2909}}^1$

素因数の和:3008

約数の個数: 16

約数和(自身を含む): 26073600

約数和(自身を除く): 5160799

約数列:

[1, 7, 13, 79, 91, 553, 1027, 2909, 7189, 20363, 37817, 229811, 264719, 1608677, 2987543, 20912801]

約数ペア:

[(1, 20912801), (7, 2987543), (13, 1608677), (79, 264719), (91, 229811), (553, 37817), (1027, 20363), (2909, 7189)]