19563640

素因数分解:

$2^3\times 5^1\times {\mathrm{383}}^1\times {\mathrm{1277}}^1$

素因数の和:1671

約数の個数: 32

約数和(自身を含む): 44167680

約数和(自身を除く): 24604040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 383, 766, 1277, 1532, 1915, 2554, 3064, 3830, 5108, 6385, 7660, 10216, 12770, 15320, 25540, 51080, 489091, 978182, 1956364, 2445455, 3912728, 4890910, 9781820, 19563640]

約数ペア:

[(1, 19563640), (2, 9781820), (4, 4890910), (5, 3912728), (8, 2445455), (10, 1956364), (20, 978182), (40, 489091), (383, 51080), (766, 25540), (1277, 15320), (1532, 12770), (1915, 10216), (2554, 7660), (3064, 6385), (3830, 5108)]