778857989

素因数分解:

$7^4\times {\mathrm{13}}^1\times {\mathrm{24953}}^1$

素因数の和:24994

約数の個数: 20

約数和(自身を含む): 978546156

約数和(自身を除く): 199688167

約数列:

[1, 7, 13, 49, 91, 343, 637, 2401, 4459, 24953, 31213, 174671, 324389, 1222697, 2270723, 8558879, 15895061, 59912153, 111265427, 778857989]

約数ペア:

[(1, 778857989), (7, 111265427), (13, 59912153), (49, 15895061), (91, 8558879), (343, 2270723), (637, 1222697), (2401, 324389), (4459, 174671), (24953, 31213)]