717920

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{641}}^1$

素因数の和:663

約数の個数: 48

約数和(自身を含む): 1941408

約数和(自身を除く): 1223488

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 641, 1120, 1282, 2564, 3205, 4487, 5128, 6410, 8974, 10256, 12820, 17948, 20512, 22435, 25640, 35896, 44870, 51280, 71792, 89740, 102560, 143584, 179480, 358960, 717920]

約数ペア:

[(1, 717920), (2, 358960), (4, 179480), (5, 143584), (7, 102560), (8, 89740), (10, 71792), (14, 51280), (16, 44870), (20, 35896), (28, 25640), (32, 22435), (35, 20512), (40, 17948), (56, 12820), (70, 10256), (80, 8974), (112, 6410), (140, 5128), (160, 4487), (224, 3205), (280, 2564), (560, 1282), (641, 1120)]