81589160

素因数分解:

$2^3\times 5^1\times {\mathrm{911}}^1\times {\mathrm{2239}}^1$

素因数の和:3161

約数の個数: 32

約数和(自身を含む): 183859200

約数和(自身を除く): 102270040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 911, 1822, 2239, 3644, 4478, 4555, 7288, 8956, 9110, 11195, 17912, 18220, 22390, 36440, 44780, 89560, 2039729, 4079458, 8158916, 10198645, 16317832, 20397290, 40794580, 81589160]

約数ペア:

[(1, 81589160), (2, 40794580), (4, 20397290), (5, 16317832), (8, 10198645), (10, 8158916), (20, 4079458), (40, 2039729), (911, 89560), (1822, 44780), (2239, 36440), (3644, 22390), (4478, 18220), (4555, 17912), (7288, 11195), (8956, 9110)]