21338338

素因数分解:

$2^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{20879}}^1$

素因数の和:20961

約数の個数: 16

約数和(自身を含む): 37082880

約数和(自身を除く): 15744542

約数列:

[1, 2, 7, 14, 73, 146, 511, 1022, 20879, 41758, 146153, 292306, 1524167, 3048334, 10669169, 21338338]

約数ペア:

[(1, 21338338), (2, 10669169), (7, 3048334), (14, 1524167), (73, 292306), (146, 146153), (511, 41758), (1022, 20879)]