80001805

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{20177}}^1$

素因数の和:20256

約数の個数: 16

約数和(自身を含む): 105087024

約数和(自身を除く): 25085219

約数列:

[1, 5, 13, 61, 65, 305, 793, 3965, 20177, 100885, 262301, 1230797, 1311505, 6153985, 16000361, 80001805]

約数ペア:

[(1, 80001805), (5, 16000361), (13, 6153985), (61, 1311505), (65, 1230797), (305, 262301), (793, 100885), (3965, 20177)]