21690845

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{9619}}^1$

素因数の和:9676

約数の個数: 16

約数和(自身を含む): 29090880

約数和(自身を除く): 7400035

約数列:

[1, 5, 11, 41, 55, 205, 451, 2255, 9619, 48095, 105809, 394379, 529045, 1971895, 4338169, 21690845]

約数ペア:

[(1, 21690845), (5, 4338169), (11, 1971895), (41, 529045), (55, 394379), (205, 105809), (451, 48095), (2255, 9619)]