20864888

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{12479}}^1$

素因数の和:12515

約数の個数: 32

約数和(自身を含む): 44928000

約数和(自身を除く): 24063112

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 76, 88, 152, 209, 418, 836, 1672, 12479, 24958, 49916, 99832, 137269, 237101, 274538, 474202, 549076, 948404, 1098152, 1896808, 2608111, 5216222, 10432444, 20864888]

約数ペア:

[(1, 20864888), (2, 10432444), (4, 5216222), (8, 2608111), (11, 1896808), (19, 1098152), (22, 948404), (38, 549076), (44, 474202), (76, 274538), (88, 237101), (152, 137269), (209, 99832), (418, 49916), (836, 24958), (1672, 12479)]