18680361

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{151}}^1$

素因数の和:341

約数の個数: 32

約数和(自身を含む): 29534208

約数和(自身を除く): 10853847

約数列:

[1, 3, 7, 21, 43, 129, 137, 151, 301, 411, 453, 903, 959, 1057, 2877, 3171, 5891, 6493, 17673, 19479, 20687, 41237, 45451, 62061, 123711, 136353, 144809, 434427, 889541, 2668623, 6226787, 18680361]

約数ペア:

[(1, 18680361), (3, 6226787), (7, 2668623), (21, 889541), (43, 434427), (129, 144809), (137, 136353), (151, 123711), (301, 62061), (411, 45451), (453, 41237), (903, 20687), (959, 19479), (1057, 17673), (2877, 6493), (3171, 5891)]