81670405

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{223}}^1\times {\mathrm{823}}^1$

素因数の和:1140

約数の個数: 16

約数和(自身を含む): 99671040

約数和(自身を除く): 18000635

約数列:

[1, 5, 89, 223, 445, 823, 1115, 4115, 19847, 73247, 99235, 183529, 366235, 917645, 16334081, 81670405]

約数ペア:

[(1, 81670405), (5, 16334081), (89, 917645), (223, 366235), (445, 183529), (823, 99235), (1115, 73247), (4115, 19847)]