21303152

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:178

約数の個数: 80

約数和(自身を含む): 47788608

約数和(自身を除く): 26485456

約数列:

[1, 2, 4, 8, 13, 16, 23, 26, 46, 52, 61, 73, 92, 104, 122, 146, 184, 208, 244, 292, 299, 368, 488, 584, 598, 793, 949, 976, 1168, 1196, 1403, 1586, 1679, 1898, 2392, 2806, 3172, 3358, 3796, 4453, 4784, 5612, 6344, 6716, 7592, 8906, 11224, 12688, 13432, 15184, 17812, 18239, 21827, 22448, 26864, 35624, 36478, 43654, 57889, 71248, 72956, 87308, 102419, 115778, 145912, 174616, 204838, 231556, 291824, 349232, 409676, 463112, 819352, 926224, 1331447, 1638704, 2662894, 5325788, 10651576, 21303152]

約数ペア:

[(1, 21303152), (2, 10651576), (4, 5325788), (8, 2662894), (13, 1638704), (16, 1331447), (23, 926224), (26, 819352), (46, 463112), (52, 409676), (61, 349232), (73, 291824), (92, 231556), (104, 204838), (122, 174616), (146, 145912), (184, 115778), (208, 102419), (244, 87308), (292, 72956), (299, 71248), (368, 57889), (488, 43654), (584, 36478), (598, 35624), (793, 26864), (949, 22448), (976, 21827), (1168, 18239), (1196, 17812), (1403, 15184), (1586, 13432), (1679, 12688), (1898, 11224), (2392, 8906), (2806, 7592), (3172, 6716), (3358, 6344), (3796, 5612), (4453, 4784)]