640491912

素因数分解:

$2^3\times 3^2\times {\mathrm{29}}^1\times {\mathrm{306749}}^1$

素因数の和:306790

約数の個数: 48

約数和(自身を含む): 1794487500

約数和(自身を除く): 1153995588

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, 306749, 613498, 920247, 1226996, 1840494, 2453992, 2760741, 3680988, 5521482, 7361976, 8895721, 11042964, 17791442, 22085928, 26687163, 35582884, 53374326, 71165768, 80061489, 106748652, 160122978, 213497304, 320245956, 640491912]

約数ペア:

[(1, 640491912), (2, 320245956), (3, 213497304), (4, 160122978), (6, 106748652), (8, 80061489), (9, 71165768), (12, 53374326), (18, 35582884), (24, 26687163), (29, 22085928), (36, 17791442), (58, 11042964), (72, 8895721), (87, 7361976), (116, 5521482), (174, 3680988), (232, 2760741), (261, 2453992), (348, 1840494), (522, 1226996), (696, 920247), (1044, 613498), (2088, 306749)]