1638225

素因数分解:

$3^4\times 5^2\times {\mathrm{809}}^1$

素因数の和:831

約数の個数: 30

約数和(自身を含む): 3038310

約数和(自身を除く): 1400085

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 405, 675, 809, 2025, 2427, 4045, 7281, 12135, 20225, 21843, 36405, 60675, 65529, 109215, 182025, 327645, 546075, 1638225]

約数ペア:

[(1, 1638225), (3, 546075), (5, 327645), (9, 182025), (15, 109215), (25, 65529), (27, 60675), (45, 36405), (75, 21843), (81, 20225), (135, 12135), (225, 7281), (405, 4045), (675, 2427), (809, 2025)]