20809796

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{18127}}^1$

素因数の和:18179

約数の個数: 24

約数和(自身を含む): 42637056

約数和(自身を除く): 21827260

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 574, 1148, 18127, 36254, 72508, 126889, 253778, 507556, 743207, 1486414, 2972828, 5202449, 10404898, 20809796]

約数ペア:

[(1, 20809796), (2, 10404898), (4, 5202449), (7, 2972828), (14, 1486414), (28, 743207), (41, 507556), (82, 253778), (164, 126889), (287, 72508), (574, 36254), (1148, 18127)]