21890603

素因数分解:

$7^3\times {\mathrm{19}}^1\times {\mathrm{3359}}^1$

素因数の和:3399

約数の個数: 16

約数和(自身を含む): 26880000

約数和(自身を除く): 4989397

約数列:

[1, 7, 19, 49, 133, 343, 931, 3359, 6517, 23513, 63821, 164591, 446747, 1152137, 3127229, 21890603]

約数ペア:

[(1, 21890603), (7, 3127229), (19, 1152137), (49, 446747), (133, 164591), (343, 63821), (931, 23513), (3359, 6517)]