20917980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{38737}}^1$

素因数の和:38755

約数の個数: 48

約数和(自身を含む): 65079840

約数和(自身を除く): 44161860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 38737, 77474, 116211, 154948, 193685, 232422, 348633, 387370, 464844, 581055, 697266, 774740, 1045899, 1162110, 1394532, 1743165, 2091798, 2324220, 3486330, 4183596, 5229495, 6972660, 10458990, 20917980]

約数ペア:

[(1, 20917980), (2, 10458990), (3, 6972660), (4, 5229495), (5, 4183596), (6, 3486330), (9, 2324220), (10, 2091798), (12, 1743165), (15, 1394532), (18, 1162110), (20, 1045899), (27, 774740), (30, 697266), (36, 581055), (45, 464844), (54, 387370), (60, 348633), (90, 232422), (108, 193685), (135, 154948), (180, 116211), (270, 77474), (540, 38737)]