21801344

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{233}}^1$

素因数の和:307

約数の個数: 64

約数和(自身を含む): 47258640

約数和(自身を除く): 25457296

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 43, 64, 68, 86, 128, 136, 172, 233, 272, 344, 466, 544, 688, 731, 932, 1088, 1376, 1462, 1864, 2176, 2752, 2924, 3728, 3961, 5504, 5848, 7456, 7922, 10019, 11696, 14912, 15844, 20038, 23392, 29824, 31688, 40076, 46784, 63376, 80152, 93568, 126752, 160304, 170323, 253504, 320608, 340646, 507008, 641216, 681292, 1282432, 1362584, 2725168, 5450336, 10900672, 21801344]

約数ペア:

[(1, 21801344), (2, 10900672), (4, 5450336), (8, 2725168), (16, 1362584), (17, 1282432), (32, 681292), (34, 641216), (43, 507008), (64, 340646), (68, 320608), (86, 253504), (128, 170323), (136, 160304), (172, 126752), (233, 93568), (272, 80152), (344, 63376), (466, 46784), (544, 40076), (688, 31688), (731, 29824), (932, 23392), (1088, 20038), (1376, 15844), (1462, 14912), (1864, 11696), (2176, 10019), (2752, 7922), (2924, 7456), (3728, 5848), (3961, 5504)]