51393447

素因数分解:

$3^4\times 7^1\times {\mathrm{90641}}^1$

素因数の和:90660

約数の個数: 20

約数和(自身を含む): 87741456

約数和(自身を除く): 36348009

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 90641, 271923, 634487, 815769, 1903461, 2447307, 5710383, 7341921, 17131149, 51393447]

約数ペア:

[(1, 51393447), (3, 17131149), (7, 7341921), (9, 5710383), (21, 2447307), (27, 1903461), (63, 815769), (81, 634487), (189, 271923), (567, 90641)]