20864956

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{179}}^1\times {\mathrm{181}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 44029440

約数和(自身を除く): 23164484

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 179, 181, 322, 358, 362, 644, 716, 724, 1253, 1267, 2506, 2534, 4117, 4163, 5012, 5068, 8234, 8326, 16468, 16652, 28819, 29141, 32399, 57638, 58282, 64798, 115276, 116564, 129596, 226793, 453586, 745177, 907172, 1490354, 2980708, 5216239, 10432478, 20864956]

約数ペア:

[(1, 20864956), (2, 10432478), (4, 5216239), (7, 2980708), (14, 1490354), (23, 907172), (28, 745177), (46, 453586), (92, 226793), (161, 129596), (179, 116564), (181, 115276), (322, 64798), (358, 58282), (362, 57638), (644, 32399), (716, 29141), (724, 28819), (1253, 16652), (1267, 16468), (2506, 8326), (2534, 8234), (4117, 5068), (4163, 5012)]