21328208

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{677}}^1$

素因数の和:875

約数の個数: 40

約数和(自身を含む): 45398880

約数和(自身を除く): 24070672

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 179, 358, 677, 716, 1354, 1432, 1969, 2708, 2864, 3938, 5416, 7447, 7876, 10832, 14894, 15752, 29788, 31504, 59576, 119152, 121183, 242366, 484732, 969464, 1333013, 1938928, 2666026, 5332052, 10664104, 21328208]

約数ペア:

[(1, 21328208), (2, 10664104), (4, 5332052), (8, 2666026), (11, 1938928), (16, 1333013), (22, 969464), (44, 484732), (88, 242366), (176, 121183), (179, 119152), (358, 59576), (677, 31504), (716, 29788), (1354, 15752), (1432, 14894), (1969, 10832), (2708, 7876), (2864, 7447), (3938, 5416)]