20970928

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1$

素因数の和:242

約数の個数: 80

約数和(自身を含む): 48318336

約数和(自身を除く): 27347408

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 34, 43, 44, 68, 86, 88, 136, 163, 172, 176, 187, 272, 326, 344, 374, 473, 652, 688, 731, 748, 946, 1304, 1462, 1496, 1793, 1892, 2608, 2771, 2924, 2992, 3586, 3784, 5542, 5848, 7009, 7172, 7568, 8041, 11084, 11696, 14018, 14344, 16082, 22168, 28036, 28688, 30481, 32164, 44336, 56072, 60962, 64328, 77099, 112144, 119153, 121924, 128656, 154198, 238306, 243848, 308396, 476612, 487696, 616792, 953224, 1233584, 1310683, 1906448, 2621366, 5242732, 10485464, 20970928]

約数ペア:

[(1, 20970928), (2, 10485464), (4, 5242732), (8, 2621366), (11, 1906448), (16, 1310683), (17, 1233584), (22, 953224), (34, 616792), (43, 487696), (44, 476612), (68, 308396), (86, 243848), (88, 238306), (136, 154198), (163, 128656), (172, 121924), (176, 119153), (187, 112144), (272, 77099), (326, 64328), (344, 60962), (374, 56072), (473, 44336), (652, 32164), (688, 30481), (731, 28688), (748, 28036), (946, 22168), (1304, 16082), (1462, 14344), (1496, 14018), (1793, 11696), (1892, 11084), (2608, 8041), (2771, 7568), (2924, 7172), (2992, 7009), (3586, 5848), (3784, 5542)]