21325275

素因数分解:

$3^4\times 5^2\times {\mathrm{10531}}^1$

素因数の和:10553

約数の個数: 30

約数和(自身を含む): 39505532

約数和(自身を除く): 18180257

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 405, 675, 2025, 10531, 31593, 52655, 94779, 157965, 263275, 284337, 473895, 789825, 853011, 1421685, 2369475, 4265055, 7108425, 21325275]

約数ペア:

[(1, 21325275), (3, 7108425), (5, 4265055), (9, 2369475), (15, 1421685), (25, 853011), (27, 789825), (45, 473895), (75, 284337), (81, 263275), (135, 157965), (225, 94779), (405, 52655), (675, 31593), (2025, 10531)]