20266405

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{2467}}^1$

素因数の和:2556

約数の個数: 16

約数和(自身を含む): 25588224

約数和(自身を除く): 5321819

約数列:

[1, 5, 31, 53, 155, 265, 1643, 2467, 8215, 12335, 76477, 130751, 382385, 653755, 4053281, 20266405]

約数ペア:

[(1, 20266405), (5, 4053281), (31, 653755), (53, 382385), (155, 130751), (265, 76477), (1643, 12335), (2467, 8215)]