19685673

素因数分解:

$3^5\times 7^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 34384896

約数和(自身を除く): 14699223

約数列:

[1, 3, 7, 9, 21, 27, 63, 71, 81, 163, 189, 213, 243, 489, 497, 567, 639, 1141, 1467, 1491, 1701, 1917, 3423, 4401, 4473, 5751, 10269, 11573, 13203, 13419, 17253, 30807, 34719, 39609, 40257, 81011, 92421, 104157, 120771, 243033, 277263, 312471, 729099, 937413, 2187297, 2812239, 6561891, 19685673]

約数ペア:

[(1, 19685673), (3, 6561891), (7, 2812239), (9, 2187297), (21, 937413), (27, 729099), (63, 312471), (71, 277263), (81, 243033), (163, 120771), (189, 104157), (213, 92421), (243, 81011), (489, 40257), (497, 39609), (567, 34719), (639, 30807), (1141, 17253), (1467, 13419), (1491, 13203), (1701, 11573), (1917, 10269), (3423, 5751), (4401, 4473)]