21115003

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{13649}}^1$

素因数の和:13686

約数の個数: 16

約数和(自身を含む): 27518400

約数和(自身を除く): 6403397

約数列:

[1, 7, 13, 17, 91, 119, 221, 1547, 13649, 95543, 177437, 232033, 1242059, 1624231, 3016429, 21115003]

約数ペア:

[(1, 21115003), (7, 3016429), (13, 1624231), (17, 1242059), (91, 232033), (119, 177437), (221, 95543), (1547, 13649)]