19935905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^2\times {\mathrm{431}}^1$

素因数の和:505

約数の個数: 24

約数和(自身を含む): 27091584

約数和(自身を除く): 7155679

約数列:

[1, 5, 11, 29, 55, 145, 319, 431, 841, 1595, 2155, 4205, 4741, 9251, 12499, 23705, 46255, 62495, 137489, 362471, 687445, 1812355, 3987181, 19935905]

約数ペア:

[(1, 19935905), (5, 3987181), (11, 1812355), (29, 687445), (55, 362471), (145, 137489), (319, 62495), (431, 46255), (841, 23705), (1595, 12499), (2155, 9251), (4205, 4741)]