19716398.000000000

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{1277}}^1$

素因数の和:1392

約数の個数: 48

約数和(自身を含む): 272530944

約数和(自身を除く): 134609836

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 67, 124, 134, 268, 403, 806, 871, 1277, 1612, 1742, 2077, 2554, 3484, 4154, 5108, 8308, 16601, 27001, 33202, 39587, 54002, 66404, 79174, 85559, 108004, 158348, 171118, 342236, 514631, 1029262, 1112267, 2058524, 2224534, 2652329, 4449068, 5304658, 10609316, 34480277, 68960554, 137921108]

約数ペア:

[(1, 137921108), (2, 68960554), (4, 34480277), (13, 10609316), (26, 5304658), (31, 4449068), (52, 2652329), (62, 2224534), (67, 2058524), (124, 1112267), (134, 1029262), (268, 514631), (403, 342236), (806, 171118), (871, 158348), (1277, 108004), (1612, 85559), (1742, 79174), (2077, 66404), (2554, 54002), (3484, 39587), (4154, 33202), (5108, 27001), (8308, 16601)]