2103804520

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{720481}}^1$

素因数の和:720565

約数の個数: 32

約数和(自身を含む): 4798410120

約数和(自身を除く): 2694605600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 720481, 1440962, 2881924, 3602405, 5763848, 7204810, 14409620, 28819240, 52595113, 105190226, 210380452, 262975565, 420760904, 525951130, 1051902260, 2103804520]

約数ペア:

[(1, 2103804520), (2, 1051902260), (4, 525951130), (5, 420760904), (8, 262975565), (10, 210380452), (20, 105190226), (40, 52595113), (73, 28819240), (146, 14409620), (292, 7204810), (365, 5763848), (584, 3602405), (730, 2881924), (1460, 1440962), (2920, 720481)]