21558609

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{599}}^1$

素因数の和:682

約数の個数: 32

約数和(自身を含む): 33792000

約数和(自身を除く): 12233391

約数列:

[1, 3, 9, 27, 31, 43, 93, 129, 279, 387, 599, 837, 1161, 1333, 1797, 3999, 5391, 11997, 16173, 18569, 25757, 35991, 55707, 77271, 167121, 231813, 501363, 695439, 798467, 2395401, 7186203, 21558609]

約数ペア:

[(1, 21558609), (3, 7186203), (9, 2395401), (27, 798467), (31, 695439), (43, 501363), (93, 231813), (129, 167121), (279, 77271), (387, 55707), (599, 35991), (837, 25757), (1161, 18569), (1333, 16173), (1797, 11997), (3999, 5391)]