20845980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{115811}}^1$

素因数の和:115826

約数の個数: 36

約数和(自身を含む): 63233352

約数和(自身を除く): 42387372

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 115811, 231622, 347433, 463244, 579055, 694866, 1042299, 1158110, 1389732, 1737165, 2084598, 2316220, 3474330, 4169196, 5211495, 6948660, 10422990, 20845980]

約数ペア:

[(1, 20845980), (2, 10422990), (3, 6948660), (4, 5211495), (5, 4169196), (6, 3474330), (9, 2316220), (10, 2084598), (12, 1737165), (15, 1389732), (18, 1158110), (20, 1042299), (30, 694866), (36, 579055), (45, 463244), (60, 347433), (90, 231622), (180, 115811)]