20901815

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{419}}^1\times {\mathrm{907}}^1$

素因数の和:1342

約数の個数: 16

約数和(自身を含む): 27457920

約数和(自身を除く): 6556105

約数列:

[1, 5, 11, 55, 419, 907, 2095, 4535, 4609, 9977, 23045, 49885, 380033, 1900165, 4180363, 20901815]

約数ペア:

[(1, 20901815), (5, 4180363), (11, 1900165), (55, 380033), (419, 49885), (907, 23045), (2095, 9977), (4535, 4609)]