20011180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{7523}}^1$

素因数の和:7558

約数の個数: 48

約数和(自身を含む): 50561280

約数和(自身を除く): 30550100

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 7523, 15046, 30092, 37615, 52661, 75230, 105322, 142937, 150460, 210644, 263305, 285874, 526610, 571748, 714685, 1000559, 1053220, 1429370, 2001118, 2858740, 4002236, 5002795, 10005590, 20011180]

約数ペア:

[(1, 20011180), (2, 10005590), (4, 5002795), (5, 4002236), (7, 2858740), (10, 2001118), (14, 1429370), (19, 1053220), (20, 1000559), (28, 714685), (35, 571748), (38, 526610), (70, 285874), (76, 263305), (95, 210644), (133, 150460), (140, 142937), (190, 105322), (266, 75230), (380, 52661), (532, 37615), (665, 30092), (1330, 15046), (2660, 7523)]