28901260

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{20353}}^1$

素因数の和:20433

約数の個数: 24

約数和(自身を含む): 61550496

約数和(自身を除く): 32649236

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 20353, 40706, 81412, 101765, 203530, 407060, 1445063, 2890126, 5780252, 7225315, 14450630, 28901260]

約数ペア:

[(1, 28901260), (2, 14450630), (4, 7225315), (5, 5780252), (10, 2890126), (20, 1445063), (71, 407060), (142, 203530), (284, 101765), (355, 81412), (710, 40706), (1420, 20353)]