20865656

素因数分解:

$2^3\times 7^1\times {\mathrm{239}}^1\times {\mathrm{1559}}^1$

素因数の和:1811

約数の個数: 32

約数和(自身を含む): 44928000

約数和(自身を除く): 24062344

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 239, 478, 956, 1559, 1673, 1912, 3118, 3346, 6236, 6692, 10913, 12472, 13384, 21826, 43652, 87304, 372601, 745202, 1490404, 2608207, 2980808, 5216414, 10432828, 20865656]

約数ペア:

[(1, 20865656), (2, 10432828), (4, 5216414), (7, 2980808), (8, 2608207), (14, 1490404), (28, 745202), (56, 372601), (239, 87304), (478, 43652), (956, 21826), (1559, 13384), (1673, 12472), (1912, 10913), (3118, 6692), (3346, 6236)]