81871744

素因数分解:

$2^7\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{439}}^1$

素因数の和:531

約数の個数: 64

約数和(自身を含む): 172339200

約数和(自身を除く): 90467456

約数列:

[1, 2, 4, 8, 16, 31, 32, 47, 62, 64, 94, 124, 128, 188, 248, 376, 439, 496, 752, 878, 992, 1457, 1504, 1756, 1984, 2914, 3008, 3512, 3968, 5828, 6016, 7024, 11656, 13609, 14048, 20633, 23312, 27218, 28096, 41266, 46624, 54436, 56192, 82532, 93248, 108872, 165064, 186496, 217744, 330128, 435488, 639623, 660256, 870976, 1279246, 1320512, 1741952, 2558492, 2641024, 5116984, 10233968, 20467936, 40935872, 81871744]

約数ペア:

[(1, 81871744), (2, 40935872), (4, 20467936), (8, 10233968), (16, 5116984), (31, 2641024), (32, 2558492), (47, 1741952), (62, 1320512), (64, 1279246), (94, 870976), (124, 660256), (128, 639623), (188, 435488), (248, 330128), (376, 217744), (439, 186496), (496, 165064), (752, 108872), (878, 93248), (992, 82532), (1457, 56192), (1504, 54436), (1756, 46624), (1984, 41266), (2914, 28096), (3008, 27218), (3512, 23312), (3968, 20633), (5828, 14048), (6016, 13609), (7024, 11656)]