85621880

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{3329}}^1$

素因数の和:3983

約数の個数: 32

約数和(自身を含む): 193006800

約数和(自身を除く): 107384920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 2572, 3215, 3329, 5144, 6430, 6658, 12860, 13316, 16645, 25720, 26632, 33290, 66580, 133160, 2140547, 4281094, 8562188, 10702735, 17124376, 21405470, 42810940, 85621880]

約数ペア:

[(1, 85621880), (2, 42810940), (4, 21405470), (5, 17124376), (8, 10702735), (10, 8562188), (20, 4281094), (40, 2140547), (643, 133160), (1286, 66580), (2572, 33290), (3215, 26632), (3329, 25720), (5144, 16645), (6430, 13316), (6658, 12860)]