388974005

素因数分解:

$5^1\times 7^4\times {\mathrm{32401}}^1$

素因数の和:32434

約数の個数: 20

約数和(自身を含む): 544548012

約数和(自身を除く): 155574007

約数列:

[1, 5, 7, 35, 49, 245, 343, 1715, 2401, 12005, 32401, 162005, 226807, 1134035, 1587649, 7938245, 11113543, 55567715, 77794801, 388974005]

約数ペア:

[(1, 388974005), (5, 77794801), (7, 55567715), (35, 11113543), (49, 7938245), (245, 1587649), (343, 1134035), (1715, 226807), (2401, 162005), (12005, 32401)]