21117551

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{2129}}^1$

素因数の和:2258

約数の個数: 16

約数和(自身を含む): 26241600

約数和(自身を除く): 5124049

約数列:

[1, 7, 13, 91, 109, 763, 1417, 2129, 9919, 14903, 27677, 193739, 232061, 1624427, 3016793, 21117551]

約数ペア:

[(1, 21117551), (7, 3016793), (13, 1624427), (91, 232061), (109, 193739), (763, 27677), (1417, 14903), (2129, 9919)]