19780551

素因数分解:

$3^3\times 7^1\times {\mathrm{104659}}^1$

素因数の和:104675

約数の個数: 16

約数和(自身を含む): 33491200

約数和(自身を除く): 13710649

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 104659, 313977, 732613, 941931, 2197839, 2825793, 6593517, 19780551]

約数ペア:

[(1, 19780551), (3, 6593517), (7, 2825793), (9, 2197839), (21, 941931), (27, 732613), (63, 313977), (189, 104659)]