7947820

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{991}}^1$

素因数の和:1401

約数の個数: 24

約数和(自身を含む): 16748928

約数和(自身を除く): 8801108

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 991, 1604, 1982, 2005, 3964, 4010, 4955, 8020, 9910, 19820, 397391, 794782, 1589564, 1986955, 3973910, 7947820]

約数ペア:

[(1, 7947820), (2, 3973910), (4, 1986955), (5, 1589564), (10, 794782), (20, 397391), (401, 19820), (802, 9910), (991, 8020), (1604, 4955), (1982, 4010), (2005, 3964)]