20381312

素因数分解:

$2^7\times 7^1\times {\mathrm{23}}^2\times {\mathrm{43}}^1$

素因数の和:110

約数の個数: 96

約数和(自身を含む): 49637280

約数和(自身を除く): 29255968

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 43, 46, 56, 64, 86, 92, 112, 128, 161, 172, 184, 224, 301, 322, 344, 368, 448, 529, 602, 644, 688, 736, 896, 989, 1058, 1204, 1288, 1376, 1472, 1978, 2116, 2408, 2576, 2752, 2944, 3703, 3956, 4232, 4816, 5152, 5504, 6923, 7406, 7912, 8464, 9632, 10304, 13846, 14812, 15824, 16928, 19264, 20608, 22747, 27692, 29624, 31648, 33856, 38528, 45494, 55384, 59248, 63296, 67712, 90988, 110768, 118496, 126592, 159229, 181976, 221536, 236992, 318458, 363952, 443072, 473984, 636916, 727904, 886144, 1273832, 1455808, 2547664, 2911616, 5095328, 10190656, 20381312]

約数ペア:

[(1, 20381312), (2, 10190656), (4, 5095328), (7, 2911616), (8, 2547664), (14, 1455808), (16, 1273832), (23, 886144), (28, 727904), (32, 636916), (43, 473984), (46, 443072), (56, 363952), (64, 318458), (86, 236992), (92, 221536), (112, 181976), (128, 159229), (161, 126592), (172, 118496), (184, 110768), (224, 90988), (301, 67712), (322, 63296), (344, 59248), (368, 55384), (448, 45494), (529, 38528), (602, 33856), (644, 31648), (688, 29624), (736, 27692), (896, 22747), (989, 20608), (1058, 19264), (1204, 16928), (1288, 15824), (1376, 14812), (1472, 13846), (1978, 10304), (2116, 9632), (2408, 8464), (2576, 7912), (2752, 7406), (2944, 6923), (3703, 5504), (3956, 5152), (4232, 4816)]