21104415

素因数分解:

$3^3\times 5^1\times {\mathrm{156329}}^1$

素因数の和:156343

約数の個数: 16

約数和(自身を含む): 37519200

約数和(自身を除く): 16414785

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 156329, 468987, 781645, 1406961, 2344935, 4220883, 7034805, 21104415]

約数ペア:

[(1, 21104415), (3, 7034805), (5, 4220883), (9, 2344935), (15, 1406961), (27, 781645), (45, 468987), (135, 156329)]