20956550

素因数分解:

$2^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{6871}}^1$

素因数の和:6944

約数の個数: 24

約数和(自身を含む): 39623952

約数和(自身を除く): 18667402

約数列:

[1, 2, 5, 10, 25, 50, 61, 122, 305, 610, 1525, 3050, 6871, 13742, 34355, 68710, 171775, 343550, 419131, 838262, 2095655, 4191310, 10478275, 20956550]

約数ペア:

[(1, 20956550), (2, 10478275), (5, 4191310), (10, 2095655), (25, 838262), (50, 419131), (61, 343550), (122, 171775), (305, 68710), (610, 34355), (1525, 13742), (3050, 6871)]