17920405

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{1693}}^1$

素因数の和:1800

約数の個数: 16

約数和(自身を含む): 22564080

約数和(自身を除く): 4643675

約数列:

[1, 5, 29, 73, 145, 365, 1693, 2117, 8465, 10585, 49097, 123589, 245485, 617945, 3584081, 17920405]

約数ペア:

[(1, 17920405), (5, 3584081), (29, 617945), (73, 245485), (145, 123589), (365, 49097), (1693, 10585), (2117, 8465)]