20899291285

素因数分解:

$5^1\times {\mathrm{157}}^1\times {\mathrm{223}}^1\times {\mathrm{277}}^1\times {\mathrm{431}}^1$

素因数の和:1093

約数の個数: 32

約数和(自身を含む): 25502625792

約数和(自身を除く): 4603334507

約数列:

[1, 5, 157, 223, 277, 431, 785, 1115, 1385, 2155, 35011, 43489, 61771, 67667, 96113, 119387, 175055, 217445, 308855, 338335, 480565, 596935, 9698047, 15089741, 18743759, 26623301, 48490235, 75448705, 93718795, 133116505, 4179858257, 20899291285]

約数ペア:

[(1, 20899291285), (5, 4179858257), (157, 133116505), (223, 93718795), (277, 75448705), (431, 48490235), (785, 26623301), (1115, 18743759), (1385, 15089741), (2155, 9698047), (35011, 596935), (43489, 480565), (61771, 338335), (67667, 308855), (96113, 217445), (119387, 175055)]