18654713

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{311}}^1$

素因数の和:389

約数の個数: 32

約数和(自身を含む): 25159680

約数和(自身を除く): 6504967

約数列:

[1, 7, 11, 19, 41, 77, 133, 209, 287, 311, 451, 779, 1463, 2177, 3157, 3421, 5453, 5909, 8569, 12751, 23947, 41363, 59983, 64999, 89257, 140261, 242269, 454993, 981827, 1695883, 2664959, 18654713]

約数ペア:

[(1, 18654713), (7, 2664959), (11, 1695883), (19, 981827), (41, 454993), (77, 242269), (133, 140261), (209, 89257), (287, 64999), (311, 59983), (451, 41363), (779, 23947), (1463, 12751), (2177, 8569), (3157, 5909), (3421, 5453)]