18120151

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{151}}^1$

素因数の和:275

約数の個数: 24

約数和(自身を含む): 22179840

約数和(自身を除く): 4059689

約数列:

[1, 7, 31, 49, 79, 151, 217, 553, 1057, 1519, 2449, 3871, 4681, 7399, 11929, 17143, 32767, 83503, 120001, 229369, 369799, 584521, 2588593, 18120151]

約数ペア:

[(1, 18120151), (7, 2588593), (31, 584521), (49, 369799), (79, 229369), (151, 120001), (217, 83503), (553, 32767), (1057, 17143), (1519, 11929), (2449, 7399), (3871, 4681)]