21074249

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{821}}^1$

素因数の和:1040

約数の個数: 16

約数和(自身を含む): 25514880

約数和(自身を除く): 4440631

約数列:

[1, 7, 19, 133, 193, 821, 1351, 3667, 5747, 15599, 25669, 109193, 158453, 1109171, 3010607, 21074249]

約数ペア:

[(1, 21074249), (7, 3010607), (19, 1109171), (133, 158453), (193, 109193), (821, 25669), (1351, 15599), (3667, 5747)]