21312423

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{983}}^1$

素因数の和:1076

約数の個数: 32

約数和(自身を含む): 34951680

約数和(自身を除く): 13639257

約数列:

[1, 3, 9, 11, 27, 33, 73, 99, 219, 297, 657, 803, 983, 1971, 2409, 2949, 7227, 8847, 10813, 21681, 26541, 32439, 71759, 97317, 215277, 291951, 645831, 789349, 1937493, 2368047, 7104141, 21312423]

約数ペア:

[(1, 21312423), (3, 7104141), (9, 2368047), (11, 1937493), (27, 789349), (33, 645831), (73, 291951), (99, 215277), (219, 97317), (297, 71759), (657, 32439), (803, 26541), (983, 21681), (1971, 10813), (2409, 8847), (2949, 7227)]