21497639255

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{53}}^1\times {\mathrm{280703}}^1$

素因数の和:280795

約数の個数: 24

約数和(自身を含む): 27921065472

約数和(自身を除く): 6423426217

約数列:

[1, 5, 17, 53, 85, 265, 289, 901, 1445, 4505, 15317, 76585, 280703, 1403515, 4771951, 14877259, 23859755, 74386295, 81123167, 252913403, 405615835, 1264567015, 4299527851, 21497639255]

約数ペア:

[(1, 21497639255), (5, 4299527851), (17, 1264567015), (53, 405615835), (85, 252913403), (265, 81123167), (289, 74386295), (901, 23859755), (1445, 14877259), (4505, 4771951), (15317, 1403515), (76585, 280703)]