81831160

素因数分解:

$2^3\times 5^1\times {\mathrm{271}}^1\times {\mathrm{7549}}^1$

素因数の和:7831

約数の個数: 32

約数和(自身を含む): 184824000

約数和(自身を除く): 102992840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 271, 542, 1084, 1355, 2168, 2710, 5420, 7549, 10840, 15098, 30196, 37745, 60392, 75490, 150980, 301960, 2045779, 4091558, 8183116, 10228895, 16366232, 20457790, 40915580, 81831160]

約数ペア:

[(1, 81831160), (2, 40915580), (4, 20457790), (5, 16366232), (8, 10228895), (10, 8183116), (20, 4091558), (40, 2045779), (271, 301960), (542, 150980), (1084, 75490), (1355, 60392), (2168, 37745), (2710, 30196), (5420, 15098), (7549, 10840)]