20290905

素因数分解:

$3^4\times 5^1\times {\mathrm{50101}}^1$

素因数の和:50118

約数の個数: 20

約数和(自身を含む): 36374052

約数和(自身を除く): 16083147

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 50101, 150303, 250505, 450909, 751515, 1352727, 2254545, 4058181, 6763635, 20290905]

約数ペア:

[(1, 20290905), (3, 6763635), (5, 4058181), (9, 2254545), (15, 1352727), (27, 751515), (45, 450909), (81, 250505), (135, 150303), (405, 50101)]