1285366887

素因数分解:

$3^4\times 7^1\times {\mathrm{2266961}}^1$

素因数の和:2266980

約数の個数: 20

約数和(自身を含む): 2194419216

約数和(自身を除く): 909052329

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 2266961, 6800883, 15868727, 20402649, 47606181, 61207947, 142818543, 183623841, 428455629, 1285366887]

約数ペア:

[(1, 1285366887), (3, 428455629), (7, 183623841), (9, 142818543), (21, 61207947), (27, 47606181), (63, 20402649), (81, 15868727), (189, 6800883), (567, 2266961)]