21638926

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{7151}}^1$

素因数の和:7259

約数の個数: 16

約数和(自身を含む): 34758720

約数和(自身を除く): 13119794

約数列:

[1, 2, 17, 34, 89, 178, 1513, 3026, 7151, 14302, 121567, 243134, 636439, 1272878, 10819463, 21638926]

約数ペア:

[(1, 21638926), (2, 10819463), (17, 1272878), (34, 636439), (89, 243134), (178, 121567), (1513, 14302), (3026, 7151)]