643220

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1109}}^1$

素因数の和:1147

約数の個数: 24

約数和(自身を含む): 1398600

約数和(自身を除く): 755380

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 1109, 2218, 4436, 5545, 11090, 22180, 32161, 64322, 128644, 160805, 321610, 643220]

約数ペア:

[(1, 643220), (2, 321610), (4, 160805), (5, 128644), (10, 64322), (20, 32161), (29, 22180), (58, 11090), (116, 5545), (145, 4436), (290, 2218), (580, 1109)]