21427072

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{229}}^1$

素因数の和:303

約数の個数: 64

約数和(自身を含む): 46450800

約数和(自身を除く): 25023728

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 43, 64, 68, 86, 128, 136, 172, 229, 272, 344, 458, 544, 688, 731, 916, 1088, 1376, 1462, 1832, 2176, 2752, 2924, 3664, 3893, 5504, 5848, 7328, 7786, 9847, 11696, 14656, 15572, 19694, 23392, 29312, 31144, 39388, 46784, 62288, 78776, 93568, 124576, 157552, 167399, 249152, 315104, 334798, 498304, 630208, 669596, 1260416, 1339192, 2678384, 5356768, 10713536, 21427072]

約数ペア:

[(1, 21427072), (2, 10713536), (4, 5356768), (8, 2678384), (16, 1339192), (17, 1260416), (32, 669596), (34, 630208), (43, 498304), (64, 334798), (68, 315104), (86, 249152), (128, 167399), (136, 157552), (172, 124576), (229, 93568), (272, 78776), (344, 62288), (458, 46784), (544, 39388), (688, 31144), (731, 29312), (916, 23392), (1088, 19694), (1376, 15572), (1462, 14656), (1832, 11696), (2176, 9847), (2752, 7786), (2924, 7328), (3664, 5848), (3893, 5504)]