20668508

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{12101}}^1$

素因数の和:12173

約数の個数: 24

約数和(自身を含む): 42018144

約数和(自身を除く): 21349636

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 854, 1708, 12101, 24202, 48404, 84707, 169414, 338828, 738161, 1476322, 2952644, 5167127, 10334254, 20668508]

約数ペア:

[(1, 20668508), (2, 10334254), (4, 5167127), (7, 2952644), (14, 1476322), (28, 738161), (61, 338828), (122, 169414), (244, 84707), (427, 48404), (854, 24202), (1708, 12101)]