204920520

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{243953}}^1$

素因数の和:243974

約数の個数: 64

約数和(自身を含む): 702587520

約数和(自身を除く): 497667000

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, 243953, 487906, 731859, 975812, 1219765, 1463718, 1707671, 1951624, 2439530, 2927436, 3415342, 3659295, 4879060, 5123013, 5854872, 6830684, 7318590, 8538355, 9758120, 10246026, 13661368, 14637180, 17076710, 20492052, 25615065, 29274360, 34153420, 40984104, 51230130, 68306840, 102460260, 204920520]

約数ペア:

[(1, 204920520), (2, 102460260), (3, 68306840), (4, 51230130), (5, 40984104), (6, 34153420), (7, 29274360), (8, 25615065), (10, 20492052), (12, 17076710), (14, 14637180), (15, 13661368), (20, 10246026), (21, 9758120), (24, 8538355), (28, 7318590), (30, 6830684), (35, 5854872), (40, 5123013), (42, 4879060), (56, 3659295), (60, 3415342), (70, 2927436), (84, 2439530), (105, 1951624), (120, 1707671), (140, 1463718), (168, 1219765), (210, 975812), (280, 731859), (420, 487906), (840, 243953)]