21398175

素因数分解:

$3^4\times 5^2\times {\mathrm{10567}}^1$

素因数の和:10589

約数の個数: 30

約数和(自身を含む): 39640568

約数和(自身を除く): 18242393

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 405, 675, 2025, 10567, 31701, 52835, 95103, 158505, 264175, 285309, 475515, 792525, 855927, 1426545, 2377575, 4279635, 7132725, 21398175]

約数ペア:

[(1, 21398175), (3, 7132725), (5, 4279635), (9, 2377575), (15, 1426545), (25, 855927), (27, 792525), (45, 475515), (75, 285309), (81, 264175), (135, 158505), (225, 95103), (405, 52835), (675, 31701), (2025, 10567)]