19780376

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{197}}^1$

素因数の和:384

約数の個数: 64

約数和(自身を含む): 46759680

約数和(自身を除く): 26979304

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 154, 163, 197, 308, 326, 394, 616, 652, 788, 1141, 1304, 1379, 1576, 1793, 2167, 2282, 2758, 3586, 4334, 4564, 5516, 7172, 8668, 9128, 11032, 12551, 14344, 15169, 17336, 25102, 30338, 32111, 50204, 60676, 64222, 100408, 121352, 128444, 224777, 256888, 353221, 449554, 706442, 899108, 1412884, 1798216, 2472547, 2825768, 4945094, 9890188, 19780376]

約数ペア:

[(1, 19780376), (2, 9890188), (4, 4945094), (7, 2825768), (8, 2472547), (11, 1798216), (14, 1412884), (22, 899108), (28, 706442), (44, 449554), (56, 353221), (77, 256888), (88, 224777), (154, 128444), (163, 121352), (197, 100408), (308, 64222), (326, 60676), (394, 50204), (616, 32111), (652, 30338), (788, 25102), (1141, 17336), (1304, 15169), (1379, 14344), (1576, 12551), (1793, 11032), (2167, 9128), (2282, 8668), (2758, 7172), (3586, 5516), (4334, 4564)]