21895315

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{17729}}^1$

素因数の和:17766

約数の個数: 16

約数和(自身を含む): 29786400

約数和(自身を除く): 7891085

約数列:

[1, 5, 13, 19, 65, 95, 247, 1235, 17729, 88645, 230477, 336851, 1152385, 1684255, 4379063, 21895315]

約数ペア:

[(1, 21895315), (5, 4379063), (13, 1684255), (19, 1152385), (65, 336851), (95, 230477), (247, 88645), (1235, 17729)]