21519056

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103457}}^1$

素因数の和:103478

約数の個数: 20

約数和(自身を含む): 44900772

約数和(自身を除く): 23381716

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 103457, 206914, 413828, 827656, 1344941, 1655312, 2689882, 5379764, 10759528, 21519056]

約数ペア:

[(1, 21519056), (2, 10759528), (4, 5379764), (8, 2689882), (13, 1655312), (16, 1344941), (26, 827656), (52, 413828), (104, 206914), (208, 103457)]