21277323

素因数分解:

$3^9\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:97

約数の個数: 40

約数和(自身を含む): 34011648

約数和(自身を除く): 12734325

約数列:

[1, 3, 9, 23, 27, 47, 69, 81, 141, 207, 243, 423, 621, 729, 1081, 1269, 1863, 2187, 3243, 3807, 5589, 6561, 9729, 11421, 16767, 19683, 29187, 34263, 50301, 87561, 102789, 150903, 262683, 308367, 452709, 788049, 925101, 2364147, 7092441, 21277323]

約数ペア:

[(1, 21277323), (3, 7092441), (9, 2364147), (23, 925101), (27, 788049), (47, 452709), (69, 308367), (81, 262683), (141, 150903), (207, 102789), (243, 87561), (423, 50301), (621, 34263), (729, 29187), (1081, 19683), (1269, 16767), (1863, 11421), (2187, 9729), (3243, 6561), (3807, 5589)]