2018353520

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{126781}}^1$

素因数の和:126993

約数の個数: 40

約数和(自身を含む): 4716290400

約数和(自身を除く): 2697936880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 1592, 1990, 3184, 3980, 7960, 15920, 126781, 253562, 507124, 633905, 1014248, 1267810, 2028496, 2535620, 5071240, 10142480, 25229419, 50458838, 100917676, 126147095, 201835352, 252294190, 403670704, 504588380, 1009176760, 2018353520]

約数ペア:

[(1, 2018353520), (2, 1009176760), (4, 504588380), (5, 403670704), (8, 252294190), (10, 201835352), (16, 126147095), (20, 100917676), (40, 50458838), (80, 25229419), (199, 10142480), (398, 5071240), (796, 2535620), (995, 2028496), (1592, 1267810), (1990, 1014248), (3184, 633905), (3980, 507124), (7960, 253562), (15920, 126781)]