138869920

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{17713}}^1$

素因数の和:17742

約数の個数: 72

約数和(自身を含む): 381665844

約数和(自身を除く): 242795924

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3920, 7840, 17713, 35426, 70852, 88565, 123991, 141704, 177130, 247982, 283408, 354260, 495964, 566816, 619955, 708520, 867937, 991928, 1239910, 1417040, 1735874, 1983856, 2479820, 2834080, 3471748, 3967712, 4339685, 4959640, 6943496, 8679370, 9919280, 13886992, 17358740, 19838560, 27773984, 34717480, 69434960, 138869920]

約数ペア:

[(1, 138869920), (2, 69434960), (4, 34717480), (5, 27773984), (7, 19838560), (8, 17358740), (10, 13886992), (14, 9919280), (16, 8679370), (20, 6943496), (28, 4959640), (32, 4339685), (35, 3967712), (40, 3471748), (49, 2834080), (56, 2479820), (70, 1983856), (80, 1735874), (98, 1417040), (112, 1239910), (140, 991928), (160, 867937), (196, 708520), (224, 619955), (245, 566816), (280, 495964), (392, 354260), (490, 283408), (560, 247982), (784, 177130), (980, 141704), (1120, 123991), (1568, 88565), (1960, 70852), (3920, 35426), (7840, 17713)]