81658120

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{19079}}^1$

素因数の和:19197

約数の個数: 32

約数和(自身を含む): 185457600

約数和(自身を除く): 103799480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 19079, 38158, 76316, 95395, 152632, 190790, 381580, 763160, 2041453, 4082906, 8165812, 10207265, 16331624, 20414530, 40829060, 81658120]

約数ペア:

[(1, 81658120), (2, 40829060), (4, 20414530), (5, 16331624), (8, 10207265), (10, 8165812), (20, 4082906), (40, 2041453), (107, 763160), (214, 381580), (428, 190790), (535, 152632), (856, 95395), (1070, 76316), (2140, 38158), (4280, 19079)]