15895640

素因数分解:

$2^3\times 5^1\times {\mathrm{401}}^1\times {\mathrm{991}}^1$

素因数の和:1403

約数の個数: 32

約数和(自身を含む): 35890560

約数和(自身を除く): 19994920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 401, 802, 991, 1604, 1982, 2005, 3208, 3964, 4010, 4955, 7928, 8020, 9910, 16040, 19820, 39640, 397391, 794782, 1589564, 1986955, 3179128, 3973910, 7947820, 15895640]

約数ペア:

[(1, 15895640), (2, 7947820), (4, 3973910), (5, 3179128), (8, 1986955), (10, 1589564), (20, 794782), (40, 397391), (401, 39640), (802, 19820), (991, 16040), (1604, 9910), (1982, 8020), (2005, 7928), (3208, 4955), (3964, 4010)]