19994721

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{1319}}^1$

素因数の和:1516

約数の個数: 16

約数和(自身を含む): 27709440

約数和(自身を除く): 7714719

約数列:

[1, 3, 31, 93, 163, 489, 1319, 3957, 5053, 15159, 40889, 122667, 214997, 644991, 6664907, 19994721]

約数ペア:

[(1, 19994721), (3, 6664907), (31, 644991), (93, 214997), (163, 122667), (489, 40889), (1319, 15159), (3957, 5053)]