72387920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1913}}^1$

素因数の和:1980

約数の個数: 80

約数和(自身を含む): 187970112

約数和(自身を除く): 115582192

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 43, 44, 55, 80, 86, 88, 110, 172, 176, 215, 220, 344, 430, 440, 473, 688, 860, 880, 946, 1720, 1892, 1913, 2365, 3440, 3784, 3826, 4730, 7568, 7652, 9460, 9565, 15304, 18920, 19130, 21043, 30608, 37840, 38260, 42086, 76520, 82259, 84172, 105215, 153040, 164518, 168344, 210430, 329036, 336688, 411295, 420860, 658072, 822590, 841720, 904849, 1316144, 1645180, 1683440, 1809698, 3290360, 3619396, 4524245, 6580720, 7238792, 9048490, 14477584, 18096980, 36193960, 72387920]

約数ペア:

[(1, 72387920), (2, 36193960), (4, 18096980), (5, 14477584), (8, 9048490), (10, 7238792), (11, 6580720), (16, 4524245), (20, 3619396), (22, 3290360), (40, 1809698), (43, 1683440), (44, 1645180), (55, 1316144), (80, 904849), (86, 841720), (88, 822590), (110, 658072), (172, 420860), (176, 411295), (215, 336688), (220, 329036), (344, 210430), (430, 168344), (440, 164518), (473, 153040), (688, 105215), (860, 84172), (880, 82259), (946, 76520), (1720, 42086), (1892, 38260), (1913, 37840), (2365, 30608), (3440, 21043), (3784, 19130), (3826, 18920), (4730, 15304), (7568, 9565), (7652, 9460)]