9781405

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1\times {\mathrm{389}}^1$

素因数の和:548

約数の個数: 16

約数和(自身を含む): 12130560

約数和(自身を除く): 2349155

約数列:

[1, 5, 47, 107, 235, 389, 535, 1945, 5029, 18283, 25145, 41623, 91415, 208115, 1956281, 9781405]

約数ペア:

[(1, 9781405), (5, 1956281), (47, 208115), (107, 91415), (235, 41623), (389, 25145), (535, 18283), (1945, 5029)]