18690208

素因数分解:

$2^5\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:134

約数の個数: 72

約数和(自身を含む): 40848192

約数和(自身を除く): 22157984

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 43, 47, 68, 86, 94, 136, 172, 188, 272, 289, 344, 376, 544, 578, 688, 731, 752, 799, 1156, 1376, 1462, 1504, 1598, 2021, 2312, 2924, 3196, 4042, 4624, 5848, 6392, 8084, 9248, 11696, 12427, 12784, 13583, 16168, 23392, 24854, 25568, 27166, 32336, 34357, 49708, 54332, 64672, 68714, 99416, 108664, 137428, 198832, 217328, 274856, 397664, 434656, 549712, 584069, 1099424, 1168138, 2336276, 4672552, 9345104, 18690208]

約数ペア:

[(1, 18690208), (2, 9345104), (4, 4672552), (8, 2336276), (16, 1168138), (17, 1099424), (32, 584069), (34, 549712), (43, 434656), (47, 397664), (68, 274856), (86, 217328), (94, 198832), (136, 137428), (172, 108664), (188, 99416), (272, 68714), (289, 64672), (344, 54332), (376, 49708), (544, 34357), (578, 32336), (688, 27166), (731, 25568), (752, 24854), (799, 23392), (1156, 16168), (1376, 13583), (1462, 12784), (1504, 12427), (1598, 11696), (2021, 9248), (2312, 8084), (2924, 6392), (3196, 5848), (4042, 4624)]