21413405

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{10627}}^1$

素因数の和:10676

約数の個数: 16

約数和(自身を含む): 28568064

約数和(自身を除く): 7154659

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 10627, 53135, 138151, 329437, 690755, 1647185, 4282681, 21413405]

約数ペア:

[(1, 21413405), (5, 4282681), (13, 1647185), (31, 690755), (65, 329437), (155, 138151), (403, 53135), (2015, 10627)]