20871818

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{55807}}^1$

素因数の和:55837

約数の個数: 16

約数和(自身を含む): 36163584

約数和(自身を除く): 15291766

約数列:

[1, 2, 11, 17, 22, 34, 187, 374, 55807, 111614, 613877, 948719, 1227754, 1897438, 10435909, 20871818]

約数ペア:

[(1, 20871818), (2, 10435909), (11, 1897438), (17, 1227754), (22, 948719), (34, 613877), (187, 111614), (374, 55807)]