28690821

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{983}}^1$

素因数の和:1062

約数の個数: 32

約数和(自身を含む): 45342720

約数和(自身を除く): 16651899

約数列:

[1, 3, 9, 23, 27, 47, 69, 141, 207, 423, 621, 983, 1081, 1269, 2949, 3243, 8847, 9729, 22609, 26541, 29187, 46201, 67827, 138603, 203481, 415809, 610443, 1062623, 1247427, 3187869, 9563607, 28690821]

約数ペア:

[(1, 28690821), (3, 9563607), (9, 3187869), (23, 1247427), (27, 1062623), (47, 610443), (69, 415809), (141, 203481), (207, 138603), (423, 67827), (621, 46201), (983, 29187), (1081, 26541), (1269, 22609), (2949, 9729), (3243, 8847)]