21895145

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{4871}}^1$

素因数の和:4936

約数の個数: 16

約数和(自身を含む): 28062720

約数和(自身を除く): 6167575

約数列:

[1, 5, 29, 31, 145, 155, 899, 4495, 4871, 24355, 141259, 151001, 706295, 755005, 4379029, 21895145]

約数ペア:

[(1, 21895145), (5, 4379029), (29, 755005), (31, 706295), (145, 151001), (155, 141259), (899, 24355), (4495, 4871)]