81423639

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{617}}^1$

素因数の和:708

約数の個数: 48

約数和(自身を含む): 135742464

約数和(自身を除く): 54318825

約数列:

[1, 3, 9, 11, 31, 33, 43, 93, 99, 129, 279, 341, 387, 473, 617, 1023, 1333, 1419, 1851, 3069, 3999, 4257, 5553, 6787, 11997, 14663, 19127, 20361, 26531, 43989, 57381, 61083, 79593, 131967, 172143, 210397, 238779, 291841, 631191, 822461, 875523, 1893573, 2467383, 2626569, 7402149, 9047071, 27141213, 81423639]

約数ペア:

[(1, 81423639), (3, 27141213), (9, 9047071), (11, 7402149), (31, 2626569), (33, 2467383), (43, 1893573), (93, 875523), (99, 822461), (129, 631191), (279, 291841), (341, 238779), (387, 210397), (473, 172143), (617, 131967), (1023, 79593), (1333, 61083), (1419, 57381), (1851, 43989), (3069, 26531), (3999, 20361), (4257, 19127), (5553, 14663), (6787, 11997)]