21338912

素因数分解:

$2^5\times 7^2\times {\mathrm{31}}^1\times {\mathrm{439}}^1$

素因数の和:494

約数の個数: 72

約数和(自身を含む): 50561280

約数和(自身を除く): 29222368

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 49, 56, 62, 98, 112, 124, 196, 217, 224, 248, 392, 434, 439, 496, 784, 868, 878, 992, 1519, 1568, 1736, 1756, 3038, 3073, 3472, 3512, 6076, 6146, 6944, 7024, 12152, 12292, 13609, 14048, 21511, 24304, 24584, 27218, 43022, 48608, 49168, 54436, 86044, 95263, 98336, 108872, 172088, 190526, 217744, 344176, 381052, 435488, 666841, 688352, 762104, 1333682, 1524208, 2667364, 3048416, 5334728, 10669456, 21338912]

約数ペア:

[(1, 21338912), (2, 10669456), (4, 5334728), (7, 3048416), (8, 2667364), (14, 1524208), (16, 1333682), (28, 762104), (31, 688352), (32, 666841), (49, 435488), (56, 381052), (62, 344176), (98, 217744), (112, 190526), (124, 172088), (196, 108872), (217, 98336), (224, 95263), (248, 86044), (392, 54436), (434, 49168), (439, 48608), (496, 43022), (784, 27218), (868, 24584), (878, 24304), (992, 21511), (1519, 14048), (1568, 13609), (1736, 12292), (1756, 12152), (3038, 7024), (3073, 6944), (3472, 6146), (3512, 6076)]