31731920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{337}}^1$

素因数の和:468

約数の個数: 80

約数和(自身を含む): 81476928

約数和(自身を除く): 49745008

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 107, 110, 176, 214, 220, 337, 428, 440, 535, 674, 856, 880, 1070, 1177, 1348, 1685, 1712, 2140, 2354, 2696, 3370, 3707, 4280, 4708, 5392, 5885, 6740, 7414, 8560, 9416, 11770, 13480, 14828, 18535, 18832, 23540, 26960, 29656, 36059, 37070, 47080, 59312, 72118, 74140, 94160, 144236, 148280, 180295, 288472, 296560, 360590, 396649, 576944, 721180, 793298, 1442360, 1586596, 1983245, 2884720, 3173192, 3966490, 6346384, 7932980, 15865960, 31731920]

約数ペア:

[(1, 31731920), (2, 15865960), (4, 7932980), (5, 6346384), (8, 3966490), (10, 3173192), (11, 2884720), (16, 1983245), (20, 1586596), (22, 1442360), (40, 793298), (44, 721180), (55, 576944), (80, 396649), (88, 360590), (107, 296560), (110, 288472), (176, 180295), (214, 148280), (220, 144236), (337, 94160), (428, 74140), (440, 72118), (535, 59312), (674, 47080), (856, 37070), (880, 36059), (1070, 29656), (1177, 26960), (1348, 23540), (1685, 18832), (1712, 18535), (2140, 14828), (2354, 13480), (2696, 11770), (3370, 9416), (3707, 8560), (4280, 7414), (4708, 6740), (5392, 5885)]