19381648

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1$

素因数の和:272

約数の個数: 80

約数和(自身を含む): 45372096

約数和(自身を除く): 25990448

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 43, 44, 52, 86, 88, 104, 143, 172, 176, 197, 208, 286, 344, 394, 473, 559, 572, 688, 788, 946, 1118, 1144, 1576, 1892, 2167, 2236, 2288, 2561, 3152, 3784, 4334, 4472, 5122, 6149, 7568, 8471, 8668, 8944, 10244, 12298, 16942, 17336, 20488, 24596, 28171, 33884, 34672, 40976, 49192, 56342, 67768, 93181, 98384, 110123, 112684, 135536, 186362, 220246, 225368, 372724, 440492, 450736, 745448, 880984, 1211353, 1490896, 1761968, 2422706, 4845412, 9690824, 19381648]

約数ペア:

[(1, 19381648), (2, 9690824), (4, 4845412), (8, 2422706), (11, 1761968), (13, 1490896), (16, 1211353), (22, 880984), (26, 745448), (43, 450736), (44, 440492), (52, 372724), (86, 225368), (88, 220246), (104, 186362), (143, 135536), (172, 112684), (176, 110123), (197, 98384), (208, 93181), (286, 67768), (344, 56342), (394, 49192), (473, 40976), (559, 34672), (572, 33884), (688, 28171), (788, 24596), (946, 20488), (1118, 17336), (1144, 16942), (1576, 12298), (1892, 10244), (2167, 8944), (2236, 8668), (2288, 8471), (2561, 7568), (3152, 6149), (3784, 5122), (4334, 4472)]