621821020

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{151}}^1\times {\mathrm{1889}}^1$

素因数の和:2158

約数の個数: 48

約数和(自身を含む): 1327233600

約数和(自身を除く): 705412580

約数列:

[1, 2, 4, 5, 10, 20, 109, 151, 218, 302, 436, 545, 604, 755, 1090, 1510, 1889, 2180, 3020, 3778, 7556, 9445, 16459, 18890, 32918, 37780, 65836, 82295, 164590, 205901, 285239, 329180, 411802, 570478, 823604, 1029505, 1140956, 1426195, 2059010, 2852390, 4118020, 5704780, 31091051, 62182102, 124364204, 155455255, 310910510, 621821020]

約数ペア:

[(1, 621821020), (2, 310910510), (4, 155455255), (5, 124364204), (10, 62182102), (20, 31091051), (109, 5704780), (151, 4118020), (218, 2852390), (302, 2059010), (436, 1426195), (545, 1140956), (604, 1029505), (755, 823604), (1090, 570478), (1510, 411802), (1889, 329180), (2180, 285239), (3020, 205901), (3778, 164590), (7556, 82295), (9445, 65836), (16459, 37780), (18890, 32918)]