21041235

素因数分解:

$3^3\times 5^1\times {\mathrm{155861}}^1$

素因数の和:155875

約数の個数: 16

約数和(自身を含む): 37406880

約数和(自身を除く): 16365645

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 155861, 467583, 779305, 1402749, 2337915, 4208247, 7013745, 21041235]

約数ペア:

[(1, 21041235), (3, 7013745), (5, 4208247), (9, 2337915), (15, 1402749), (27, 779305), (45, 467583), (135, 155861)]