20979675

素因数分解:

$3^3\times 5^2\times {\mathrm{31081}}^1$

素因数の和:31100

約数の個数: 24

約数和(自身を含む): 38541680

約数和(自身を除く): 17562005

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 225, 675, 31081, 93243, 155405, 279729, 466215, 777025, 839187, 1398645, 2331075, 4195935, 6993225, 20979675]

約数ペア:

[(1, 20979675), (3, 6993225), (5, 4195935), (9, 2331075), (15, 1398645), (25, 839187), (27, 777025), (45, 466215), (75, 279729), (135, 155405), (225, 93243), (675, 31081)]