21780333

素因数分解:

$3^7\times {\mathrm{23}}^1\times {\mathrm{433}}^1$

素因数の和:477

約数の個数: 32

約数和(自身を含む): 34164480

約数和(自身を除く): 12384147

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 243, 433, 621, 729, 1299, 1863, 2187, 3897, 5589, 9959, 11691, 16767, 29877, 35073, 50301, 89631, 105219, 268893, 315657, 806679, 946971, 2420037, 7260111, 21780333]

約数ペア:

[(1, 21780333), (3, 7260111), (9, 2420037), (23, 946971), (27, 806679), (69, 315657), (81, 268893), (207, 105219), (243, 89631), (433, 50301), (621, 35073), (729, 29877), (1299, 16767), (1863, 11691), (2187, 9959), (3897, 5589)]