31891760

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{3947}}^1$

素因数の和:4061

約数の個数: 40

約数和(自身を含む): 74901456

約数和(自身を除く): 43009696

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 3947, 4040, 7894, 8080, 15788, 19735, 31576, 39470, 63152, 78940, 157880, 315760, 398647, 797294, 1594588, 1993235, 3189176, 3986470, 6378352, 7972940, 15945880, 31891760]

約数ペア:

[(1, 31891760), (2, 15945880), (4, 7972940), (5, 6378352), (8, 3986470), (10, 3189176), (16, 1993235), (20, 1594588), (40, 797294), (80, 398647), (101, 315760), (202, 157880), (404, 78940), (505, 63152), (808, 39470), (1010, 31576), (1616, 19735), (2020, 15788), (3947, 8080), (4040, 7894)]