19990135

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{151}}^1$

素因数の和:279

約数の個数: 32

約数和(自身を含む): 27578880

約数和(自身を除く): 7588745

約数列:

[1, 5, 11, 29, 55, 83, 145, 151, 319, 415, 755, 913, 1595, 1661, 2407, 4379, 4565, 8305, 12035, 12533, 21895, 26477, 48169, 62665, 132385, 137863, 240845, 363457, 689315, 1817285, 3998027, 19990135]

約数ペア:

[(1, 19990135), (5, 3998027), (11, 1817285), (29, 689315), (55, 363457), (83, 240845), (145, 137863), (151, 132385), (319, 62665), (415, 48169), (755, 26477), (913, 21895), (1595, 12533), (1661, 12035), (2407, 8305), (4379, 4565)]