21000763

素因数分解:

$7^2\times {\mathrm{17}}^2\times {\mathrm{1483}}^1$

素因数の和:1531

約数の個数: 18

約数和(自身を含む): 25968516

約数和(自身を除く): 4967753

約数列:

[1, 7, 17, 49, 119, 289, 833, 1483, 2023, 10381, 14161, 25211, 72667, 176477, 428587, 1235339, 3000109, 21000763]

約数ペア:

[(1, 21000763), (7, 3000109), (17, 1235339), (49, 428587), (119, 176477), (289, 72667), (833, 25211), (1483, 14161), (2023, 10381)]