20215360520

素因数分解:

$2^3\times 5^1\times {\mathrm{1801}}^1\times {\mathrm{280613}}^1$

素因数の和:282425

約数の個数: 32

約数和(自身を含む): 45509978520

約数和(自身を除く): 25294618000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1801, 3602, 7204, 9005, 14408, 18010, 36020, 72040, 280613, 561226, 1122452, 1403065, 2244904, 2806130, 5612260, 11224520, 505384013, 1010768026, 2021536052, 2526920065, 4043072104, 5053840130, 10107680260, 20215360520]

約数ペア:

[(1, 20215360520), (2, 10107680260), (4, 5053840130), (5, 4043072104), (8, 2526920065), (10, 2021536052), (20, 1010768026), (40, 505384013), (1801, 11224520), (3602, 5612260), (7204, 2806130), (9005, 2244904), (14408, 1403065), (18010, 1122452), (36020, 561226), (72040, 280613)]