19749136

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{101}}^2$

素因数の和:232

約数の個数: 45

約数和(自身を含む): 42479269

約数和(自身を除く): 22730133

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 101, 121, 176, 202, 242, 404, 484, 808, 968, 1111, 1616, 1936, 2222, 4444, 8888, 10201, 12221, 17776, 20402, 24442, 40804, 48884, 81608, 97768, 112211, 163216, 195536, 224422, 448844, 897688, 1234321, 1795376, 2468642, 4937284, 9874568, 19749136]

約数ペア:

[(1, 19749136), (2, 9874568), (4, 4937284), (8, 2468642), (11, 1795376), (16, 1234321), (22, 897688), (44, 448844), (88, 224422), (101, 195536), (121, 163216), (176, 112211), (202, 97768), (242, 81608), (404, 48884), (484, 40804), (808, 24442), (968, 20402), (1111, 17776), (1616, 12221), (1936, 10201), (2222, 8888)]