18919450

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{839}}^1$

素因数の和:903

約数の個数: 48

約数和(自身を含む): 39372480

約数和(自身を除く): 20453030

約数列:

[1, 2, 5, 10, 11, 22, 25, 41, 50, 55, 82, 110, 205, 275, 410, 451, 550, 839, 902, 1025, 1678, 2050, 2255, 4195, 4510, 8390, 9229, 11275, 18458, 20975, 22550, 34399, 41950, 46145, 68798, 92290, 171995, 230725, 343990, 378389, 461450, 756778, 859975, 1719950, 1891945, 3783890, 9459725, 18919450]

約数ペア:

[(1, 18919450), (2, 9459725), (5, 3783890), (10, 1891945), (11, 1719950), (22, 859975), (25, 756778), (41, 461450), (50, 378389), (55, 343990), (82, 230725), (110, 171995), (205, 92290), (275, 68798), (410, 46145), (451, 41950), (550, 34399), (839, 22550), (902, 20975), (1025, 18458), (1678, 11275), (2050, 9229), (2255, 8390), (4195, 4510)]