638961872

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{9907}}^1$

素因数の和:10083

約数の個数: 40

約数和(自身を含む): 1290021600

約数和(自身を除く): 651059728

約数列:

[1, 2, 4, 8, 16, 29, 58, 116, 139, 232, 278, 464, 556, 1112, 2224, 4031, 8062, 9907, 16124, 19814, 32248, 39628, 64496, 79256, 158512, 287303, 574606, 1149212, 1377073, 2298424, 2754146, 4596848, 5508292, 11016584, 22033168, 39935117, 79870234, 159740468, 319480936, 638961872]

約数ペア:

[(1, 638961872), (2, 319480936), (4, 159740468), (8, 79870234), (16, 39935117), (29, 22033168), (58, 11016584), (116, 5508292), (139, 4596848), (232, 2754146), (278, 2298424), (464, 1377073), (556, 1149212), (1112, 574606), (2224, 287303), (4031, 158512), (8062, 79256), (9907, 64496), (16124, 39628), (19814, 32248)]