18478945

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{4111}}^1$

素因数の和:4176

約数の個数: 16

約数和(自身を含む): 23685120

約数和(自身を除く): 5206175

約数列:

[1, 5, 29, 31, 145, 155, 899, 4111, 4495, 20555, 119219, 127441, 596095, 637205, 3695789, 18478945]

約数ペア:

[(1, 18478945), (5, 3695789), (29, 637205), (31, 596095), (145, 127441), (155, 119219), (899, 20555), (4111, 4495)]