21637818

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{16931}}^1$

素因数の和:17010

約数の個数: 24

約数和(自身を含む): 47545056

約数和(自身を除く): 25907238

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 213, 426, 639, 1278, 16931, 33862, 50793, 101586, 152379, 304758, 1202101, 2404202, 3606303, 7212606, 10818909, 21637818]

約数ペア:

[(1, 21637818), (2, 10818909), (3, 7212606), (6, 3606303), (9, 2404202), (18, 1202101), (71, 304758), (142, 152379), (213, 101586), (426, 50793), (639, 33862), (1278, 16931)]