21080878

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{16547}}^1$

素因数の和:16576

約数の個数: 24

約数和(自身を含む): 39615912

約数和(自身を除く): 18535034

約数列:

[1, 2, 7, 13, 14, 26, 49, 91, 98, 182, 637, 1274, 16547, 33094, 115829, 215111, 231658, 430222, 810803, 1505777, 1621606, 3011554, 10540439, 21080878]

約数ペア:

[(1, 21080878), (2, 10540439), (7, 3011554), (13, 1621606), (14, 1505777), (26, 810803), (49, 430222), (91, 231658), (98, 215111), (182, 115829), (637, 33094), (1274, 16547)]