20031340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{719}}^1$

素因数の和:934

約数の個数: 48

約数和(自身を含む): 48384000

約数和(自身を除く): 28352660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 199, 398, 719, 796, 995, 1393, 1438, 1990, 2786, 2876, 3595, 3980, 5033, 5572, 6965, 7190, 10066, 13930, 14380, 20132, 25165, 27860, 50330, 100660, 143081, 286162, 572324, 715405, 1001567, 1430810, 2003134, 2861620, 4006268, 5007835, 10015670, 20031340]

約数ペア:

[(1, 20031340), (2, 10015670), (4, 5007835), (5, 4006268), (7, 2861620), (10, 2003134), (14, 1430810), (20, 1001567), (28, 715405), (35, 572324), (70, 286162), (140, 143081), (199, 100660), (398, 50330), (719, 27860), (796, 25165), (995, 20132), (1393, 14380), (1438, 13930), (1990, 10066), (2786, 7190), (2876, 6965), (3595, 5572), (3980, 5033)]