16720357080

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{19905187}}^1$

素因数の和:19905208

約数の個数: 64

約数和(自身を含む): 57326941440

約数和(自身を除く): 40606584360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 19905187, 39810374, 59715561, 79620748, 99525935, 119431122, 139336309, 159241496, 199051870, 238862244, 278672618, 298577805, 398103740, 418008927, 477724488, 557345236, 597155610, 696681545, 796207480, 836017854, 1114690472, 1194311220, 1393363090, 1672035708, 2090044635, 2388622440, 2786726180, 3344071416, 4180089270, 5573452360, 8360178540, 16720357080]

約数ペア:

[(1, 16720357080), (2, 8360178540), (3, 5573452360), (4, 4180089270), (5, 3344071416), (6, 2786726180), (7, 2388622440), (8, 2090044635), (10, 1672035708), (12, 1393363090), (14, 1194311220), (15, 1114690472), (20, 836017854), (21, 796207480), (24, 696681545), (28, 597155610), (30, 557345236), (35, 477724488), (40, 418008927), (42, 398103740), (56, 298577805), (60, 278672618), (70, 238862244), (84, 199051870), (105, 159241496), (120, 139336309), (140, 119431122), (168, 99525935), (210, 79620748), (280, 59715561), (420, 39810374), (840, 19905187)]