16381405

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1\times {\mathrm{787}}^1$

素因数の和:996

約数の個数: 16

約数和(自身を含む): 20651904

約数和(自身を除く): 4270499

約数列:

[1, 5, 23, 115, 181, 787, 905, 3935, 4163, 18101, 20815, 90505, 142447, 712235, 3276281, 16381405]

約数ペア:

[(1, 16381405), (5, 3276281), (23, 712235), (115, 142447), (181, 90505), (787, 20815), (905, 18101), (3935, 4163)]