21680256

素因数分解:

$2^7\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:174

約数の個数: 128

約数和(自身を含む): 64088640

約数和(自身を除く): 42408384

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 43, 48, 52, 64, 78, 86, 96, 101, 104, 128, 129, 156, 172, 192, 202, 208, 258, 303, 312, 344, 384, 404, 416, 516, 559, 606, 624, 688, 808, 832, 1032, 1118, 1212, 1248, 1313, 1376, 1616, 1664, 1677, 2064, 2236, 2424, 2496, 2626, 2752, 3232, 3354, 3939, 4128, 4343, 4472, 4848, 4992, 5252, 5504, 6464, 6708, 7878, 8256, 8686, 8944, 9696, 10504, 12928, 13029, 13416, 15756, 16512, 17372, 17888, 19392, 21008, 26058, 26832, 31512, 34744, 35776, 38784, 42016, 52116, 53664, 56459, 63024, 69488, 71552, 84032, 104232, 107328, 112918, 126048, 138976, 168064, 169377, 208464, 214656, 225836, 252096, 277952, 338754, 416928, 451672, 504192, 555904, 677508, 833856, 903344, 1355016, 1667712, 1806688, 2710032, 3613376, 5420064, 7226752, 10840128, 21680256]

約数ペア:

[(1, 21680256), (2, 10840128), (3, 7226752), (4, 5420064), (6, 3613376), (8, 2710032), (12, 1806688), (13, 1667712), (16, 1355016), (24, 903344), (26, 833856), (32, 677508), (39, 555904), (43, 504192), (48, 451672), (52, 416928), (64, 338754), (78, 277952), (86, 252096), (96, 225836), (101, 214656), (104, 208464), (128, 169377), (129, 168064), (156, 138976), (172, 126048), (192, 112918), (202, 107328), (208, 104232), (258, 84032), (303, 71552), (312, 69488), (344, 63024), (384, 56459), (404, 53664), (416, 52116), (516, 42016), (559, 38784), (606, 35776), (624, 34744), (688, 31512), (808, 26832), (832, 26058), (1032, 21008), (1118, 19392), (1212, 17888), (1248, 17372), (1313, 16512), (1376, 15756), (1616, 13416), (1664, 13029), (1677, 12928), (2064, 10504), (2236, 9696), (2424, 8944), (2496, 8686), (2626, 8256), (2752, 7878), (3232, 6708), (3354, 6464), (3939, 5504), (4128, 5252), (4343, 4992), (4472, 4848)]