20870540

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{17107}}^1$

素因数の和:17177

約数の個数: 24

約数和(自身を含む): 44549232

約数和(自身を除く): 23678692

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 17107, 34214, 68428, 85535, 171070, 342140, 1043527, 2087054, 4174108, 5217635, 10435270, 20870540]

約数ペア:

[(1, 20870540), (2, 10435270), (4, 5217635), (5, 4174108), (10, 2087054), (20, 1043527), (61, 342140), (122, 171070), (244, 85535), (305, 68428), (610, 34214), (1220, 17107)]