21034647

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{8377}}^1$

素因数の和:8420

約数の個数: 20

約数和(自身を含む): 32439616

約数和(自身を除く): 11404969

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 8377, 25131, 75393, 226179, 259687, 678537, 779061, 2337183, 7011549, 21034647]

約数ペア:

[(1, 21034647), (3, 7011549), (9, 2337183), (27, 779061), (31, 678537), (81, 259687), (93, 226179), (279, 75393), (837, 25131), (2511, 8377)]