20315659

素因数分解:

$7^1\times {\mathrm{13}}^3\times {\mathrm{1321}}^1$

素因数の和:1367

約数の個数: 16

約数和(自身を含む): 25170880

約数和(自身を除く): 4855221

約数列:

[1, 7, 13, 91, 169, 1183, 1321, 2197, 9247, 15379, 17173, 120211, 223249, 1562743, 2902237, 20315659]

約数ペア:

[(1, 20315659), (7, 2902237), (13, 1562743), (91, 223249), (169, 120211), (1183, 17173), (1321, 15379), (2197, 9247)]