205719680

素因数分解:

$2^7\times 5^1\times {\mathrm{127}}^1\times {\mathrm{2531}}^1$

素因数の和:2677

約数の個数: 64

約数和(自身を含む): 495866880

約数和(自身を除く): 290147200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 160, 254, 320, 508, 635, 640, 1016, 1270, 2032, 2531, 2540, 4064, 5062, 5080, 8128, 10124, 10160, 12655, 16256, 20248, 20320, 25310, 40496, 40640, 50620, 80992, 81280, 101240, 161984, 202480, 321437, 323968, 404960, 642874, 809920, 1285748, 1607185, 1619840, 2571496, 3214370, 5142992, 6428740, 10285984, 12857480, 20571968, 25714960, 41143936, 51429920, 102859840, 205719680]

約数ペア:

[(1, 205719680), (2, 102859840), (4, 51429920), (5, 41143936), (8, 25714960), (10, 20571968), (16, 12857480), (20, 10285984), (32, 6428740), (40, 5142992), (64, 3214370), (80, 2571496), (127, 1619840), (128, 1607185), (160, 1285748), (254, 809920), (320, 642874), (508, 404960), (635, 323968), (640, 321437), (1016, 202480), (1270, 161984), (2032, 101240), (2531, 81280), (2540, 80992), (4064, 50620), (5062, 40640), (5080, 40496), (8128, 25310), (10124, 20320), (10160, 20248), (12655, 16256)]