20662047

素因数分解:

$3^6\times 7^1\times {\mathrm{4049}}^1$

素因数の和:4074

約数の個数: 28

約数和(自身を含む): 35413200

約数和(自身を除く): 14751153

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 729, 1701, 4049, 5103, 12147, 28343, 36441, 85029, 109323, 255087, 327969, 765261, 983907, 2295783, 2951721, 6887349, 20662047]

約数ペア:

[(1, 20662047), (3, 6887349), (7, 2951721), (9, 2295783), (21, 983907), (27, 765261), (63, 327969), (81, 255087), (189, 109323), (243, 85029), (567, 36441), (729, 28343), (1701, 12147), (4049, 5103)]