256536620

素因数分解:

$2^2\times 5^1\times {\mathrm{3449}}^1\times {\mathrm{3719}}^1$

素因数の和:7177

約数の個数: 24

約数和(自身を含む): 539028000

約数和(自身を除く): 282491380

約数列:

[1, 2, 4, 5, 10, 20, 3449, 3719, 6898, 7438, 13796, 14876, 17245, 18595, 34490, 37190, 68980, 74380, 12826831, 25653662, 51307324, 64134155, 128268310, 256536620]

約数ペア:

[(1, 256536620), (2, 128268310), (4, 64134155), (5, 51307324), (10, 25653662), (20, 12826831), (3449, 74380), (3719, 68980), (6898, 37190), (7438, 34490), (13796, 18595), (14876, 17245)]