81512440

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{5839}}^1$

素因数の和:6199

約数の個数: 32

約数和(自身を含む): 183960000

約数和(自身を除く): 102447560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 1396, 1745, 2792, 3490, 5839, 6980, 11678, 13960, 23356, 29195, 46712, 58390, 116780, 233560, 2037811, 4075622, 8151244, 10189055, 16302488, 20378110, 40756220, 81512440]

約数ペア:

[(1, 81512440), (2, 40756220), (4, 20378110), (5, 16302488), (8, 10189055), (10, 8151244), (20, 4075622), (40, 2037811), (349, 233560), (698, 116780), (1396, 58390), (1745, 46712), (2792, 29195), (3490, 23356), (5839, 13960), (6980, 11678)]