21720690

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{80447}}^1$

素因数の和:80463

約数の個数: 32

約数和(自身を含む): 57922560

約数和(自身を除く): 36201870

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 270, 80447, 160894, 241341, 402235, 482682, 724023, 804470, 1206705, 1448046, 2172069, 2413410, 3620115, 4344138, 7240230, 10860345, 21720690]

約数ペア:

[(1, 21720690), (2, 10860345), (3, 7240230), (5, 4344138), (6, 3620115), (9, 2413410), (10, 2172069), (15, 1448046), (18, 1206705), (27, 804470), (30, 724023), (45, 482682), (54, 402235), (90, 241341), (135, 160894), (270, 80447)]