21009735

素因数分解:

$3^2\times 5^1\times {\mathrm{541}}^1\times {\mathrm{863}}^1$

素因数の和:1415

約数の個数: 24

約数和(自身を含む): 36526464

約数和(自身を除く): 15516729

約数列:

[1, 3, 5, 9, 15, 45, 541, 863, 1623, 2589, 2705, 4315, 4869, 7767, 8115, 12945, 24345, 38835, 466883, 1400649, 2334415, 4201947, 7003245, 21009735]

約数ペア:

[(1, 21009735), (3, 7003245), (5, 4201947), (9, 2334415), (15, 1400649), (45, 466883), (541, 38835), (863, 24345), (1623, 12945), (2589, 8115), (2705, 7767), (4315, 4869)]