80717920

素因数分解:

$2^5\times 5^1\times {\mathrm{229}}^1\times {\mathrm{2203}}^1$

素因数の和:2447

約数の個数: 48

約数和(自身を含む): 191615760

約数和(自身を除く): 110897840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 229, 458, 916, 1145, 1832, 2203, 2290, 3664, 4406, 4580, 7328, 8812, 9160, 11015, 17624, 18320, 22030, 35248, 36640, 44060, 70496, 88120, 176240, 352480, 504487, 1008974, 2017948, 2522435, 4035896, 5044870, 8071792, 10089740, 16143584, 20179480, 40358960, 80717920]

約数ペア:

[(1, 80717920), (2, 40358960), (4, 20179480), (5, 16143584), (8, 10089740), (10, 8071792), (16, 5044870), (20, 4035896), (32, 2522435), (40, 2017948), (80, 1008974), (160, 504487), (229, 352480), (458, 176240), (916, 88120), (1145, 70496), (1832, 44060), (2203, 36640), (2290, 35248), (3664, 22030), (4406, 18320), (4580, 17624), (7328, 11015), (8812, 9160)]