81521811

素因数分解:

$3^2\times 7^1\times {\mathrm{937}}^1\times {\mathrm{1381}}^1$

素因数の和:2331

約数の個数: 24

約数和(自身を含む): 134816864

約数和(自身を除く): 53295053

約数列:

[1, 3, 7, 9, 21, 63, 937, 1381, 2811, 4143, 6559, 8433, 9667, 12429, 19677, 29001, 59031, 87003, 1293997, 3881991, 9057979, 11645973, 27173937, 81521811]

約数ペア:

[(1, 81521811), (3, 27173937), (7, 11645973), (9, 9057979), (21, 3881991), (63, 1293997), (937, 87003), (1381, 59031), (2811, 29001), (4143, 19677), (6559, 12429), (8433, 9667)]