639443736

素因数分解:

$2^3\times 3^2\times {\mathrm{29}}^1\times {\mathrm{306247}}^1$

素因数の和:306288

約数の個数: 48

約数和(自身を含む): 1791550800

約数和(自身を除く): 1152107064

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 29, 36, 58, 72, 87, 116, 174, 232, 261, 348, 522, 696, 1044, 2088, 306247, 612494, 918741, 1224988, 1837482, 2449976, 2756223, 3674964, 5512446, 7349928, 8881163, 11024892, 17762326, 22049784, 26643489, 35524652, 53286978, 71049304, 79930467, 106573956, 159860934, 213147912, 319721868, 639443736]

約数ペア:

[(1, 639443736), (2, 319721868), (3, 213147912), (4, 159860934), (6, 106573956), (8, 79930467), (9, 71049304), (12, 53286978), (18, 35524652), (24, 26643489), (29, 22049784), (36, 17762326), (58, 11024892), (72, 8881163), (87, 7349928), (116, 5512446), (174, 3674964), (232, 2756223), (261, 2449976), (348, 1837482), (522, 1224988), (696, 918741), (1044, 612494), (2088, 306247)]