212821520

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{20947}}^1$

素因数の和:21087

約数の個数: 40

約数和(自身を含む): 498729984

約数和(自身を除く): 285908464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 1016, 1270, 2032, 2540, 5080, 10160, 20947, 41894, 83788, 104735, 167576, 209470, 335152, 418940, 837880, 1675760, 2660269, 5320538, 10641076, 13301345, 21282152, 26602690, 42564304, 53205380, 106410760, 212821520]

約数ペア:

[(1, 212821520), (2, 106410760), (4, 53205380), (5, 42564304), (8, 26602690), (10, 21282152), (16, 13301345), (20, 10641076), (40, 5320538), (80, 2660269), (127, 1675760), (254, 837880), (508, 418940), (635, 335152), (1016, 209470), (1270, 167576), (2032, 104735), (2540, 83788), (5080, 41894), (10160, 20947)]