19902351

素因数分解:

$3^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{8387}}^1$

素因数の和:8510

約数の個数: 16

約数和(自身を含む): 30599424

約数和(自身を除く): 10697073

約数列:

[1, 3, 7, 21, 113, 339, 791, 2373, 8387, 25161, 58709, 176127, 947731, 2843193, 6634117, 19902351]

約数ペア:

[(1, 19902351), (3, 6634117), (7, 2843193), (21, 947731), (113, 176127), (339, 58709), (791, 25161), (2373, 8387)]