18315280

素因数分解:

$2^4\times 5^1\times {\mathrm{179}}^1\times {\mathrm{1279}}^1$

素因数の和:1471

約数の個数: 40

約数和(自身を含む): 42854400

約数和(自身を除く): 24539120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 179, 358, 716, 895, 1279, 1432, 1790, 2558, 2864, 3580, 5116, 6395, 7160, 10232, 12790, 14320, 20464, 25580, 51160, 102320, 228941, 457882, 915764, 1144705, 1831528, 2289410, 3663056, 4578820, 9157640, 18315280]

約数ペア:

[(1, 18315280), (2, 9157640), (4, 4578820), (5, 3663056), (8, 2289410), (10, 1831528), (16, 1144705), (20, 915764), (40, 457882), (80, 228941), (179, 102320), (358, 51160), (716, 25580), (895, 20464), (1279, 14320), (1432, 12790), (1790, 10232), (2558, 7160), (2864, 6395), (3580, 5116)]