19915992

素因数分解:

$2^3\times 3^2\times {\mathrm{163}}^1\times {\mathrm{1697}}^1$

素因数の和:1872

約数の個数: 48

約数和(自身を含む): 54302040

約数和(自身を除く): 34386048

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 163, 326, 489, 652, 978, 1304, 1467, 1697, 1956, 2934, 3394, 3912, 5091, 5868, 6788, 10182, 11736, 13576, 15273, 20364, 30546, 40728, 61092, 122184, 276611, 553222, 829833, 1106444, 1659666, 2212888, 2489499, 3319332, 4978998, 6638664, 9957996, 19915992]

約数ペア:

[(1, 19915992), (2, 9957996), (3, 6638664), (4, 4978998), (6, 3319332), (8, 2489499), (9, 2212888), (12, 1659666), (18, 1106444), (24, 829833), (36, 553222), (72, 276611), (163, 122184), (326, 61092), (489, 40728), (652, 30546), (978, 20364), (1304, 15273), (1467, 13576), (1697, 11736), (1956, 10182), (2934, 6788), (3394, 5868), (3912, 5091)]