21052843

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{3041}}^1$

素因数の和:3114

約数の個数: 16

約数和(自身を含む): 25698816

約数和(自身を除く): 4645973

約数列:

[1, 7, 23, 43, 161, 301, 989, 3041, 6923, 21287, 69943, 130763, 489601, 915341, 3007549, 21052843]

約数ペア:

[(1, 21052843), (7, 3007549), (23, 915341), (43, 489601), (161, 130763), (301, 69943), (989, 21287), (3041, 6923)]