17980405

素因数分解:

$5^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1\times {\mathrm{283}}^1$

素因数の和:516

約数の個数: 16

約数和(自身を含む): 22042944

約数和(自身を除く): 4062539

約数列:

[1, 5, 97, 131, 283, 485, 655, 1415, 12707, 27451, 37073, 63535, 137255, 185365, 3596081, 17980405]

約数ペア:

[(1, 17980405), (5, 3596081), (97, 185365), (131, 137255), (283, 63535), (485, 37073), (655, 27451), (1415, 12707)]