20805791215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{1811}}^1\times {\mathrm{2347}}^1$

素因数の和:4263

約数の個数: 32

約数和(自身を含む): 27569652480

約数和(自身を除く): 6763861265

約数列:

[1, 5, 11, 55, 89, 445, 979, 1811, 2347, 4895, 9055, 11735, 19921, 25817, 99605, 129085, 161179, 208883, 805895, 1044415, 1772969, 2297713, 4250417, 8864845, 11488565, 21252085, 46754587, 233772935, 378287113, 1891435565, 4161158243, 20805791215]

約数ペア:

[(1, 20805791215), (5, 4161158243), (11, 1891435565), (55, 378287113), (89, 233772935), (445, 46754587), (979, 21252085), (1811, 11488565), (2347, 8864845), (4895, 4250417), (9055, 2297713), (11735, 1772969), (19921, 1044415), (25817, 805895), (99605, 208883), (129085, 161179)]