21073080

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{25087}}^1$

素因数の和:25108

約数の個数: 64

約数和(自身を含む): 72253440

約数和(自身を除く): 51180360

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, 25087, 50174, 75261, 100348, 125435, 150522, 175609, 200696, 250870, 301044, 351218, 376305, 501740, 526827, 602088, 702436, 752610, 878045, 1003480, 1053654, 1404872, 1505220, 1756090, 2107308, 2634135, 3010440, 3512180, 4214616, 5268270, 7024360, 10536540, 21073080]

約数ペア:

[(1, 21073080), (2, 10536540), (3, 7024360), (4, 5268270), (5, 4214616), (6, 3512180), (7, 3010440), (8, 2634135), (10, 2107308), (12, 1756090), (14, 1505220), (15, 1404872), (20, 1053654), (21, 1003480), (24, 878045), (28, 752610), (30, 702436), (35, 602088), (40, 526827), (42, 501740), (56, 376305), (60, 351218), (70, 301044), (84, 250870), (105, 200696), (120, 175609), (140, 150522), (168, 125435), (210, 100348), (280, 75261), (420, 50174), (840, 25087)]