21318437

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{1801}}^1$

素因数の和:1916

約数の個数: 16

約数和(自身を含む): 25948800

約数和(自身を除く): 4630363

約数列:

[1, 7, 19, 89, 133, 623, 1691, 1801, 11837, 12607, 34219, 160289, 239533, 1122023, 3045491, 21318437]

約数ペア:

[(1, 21318437), (7, 3045491), (19, 1122023), (89, 239533), (133, 160289), (623, 34219), (1691, 12607), (1801, 11837)]