21255075

素因数分解:

$3^3\times 5^2\times {\mathrm{31489}}^1$

素因数の和:31508

約数の個数: 24

約数和(自身を含む): 39047600

約数和(自身を除く): 17792525

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 225, 675, 31489, 94467, 157445, 283401, 472335, 787225, 850203, 1417005, 2361675, 4251015, 7085025, 21255075]

約数ペア:

[(1, 21255075), (3, 7085025), (5, 4251015), (9, 2361675), (15, 1417005), (25, 850203), (27, 787225), (45, 472335), (75, 283401), (135, 157445), (225, 94467), (675, 31489)]