20651008

素因数分解:

$2^{10}\times 7^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:137

約数の個数: 88

約数和(自身を含む): 48996992

約数和(自身を除く): 28345984

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 43, 56, 64, 67, 86, 112, 128, 134, 172, 224, 256, 268, 301, 344, 448, 469, 512, 536, 602, 688, 896, 938, 1024, 1072, 1204, 1376, 1792, 1876, 2144, 2408, 2752, 2881, 3584, 3752, 4288, 4816, 5504, 5762, 7168, 7504, 8576, 9632, 11008, 11524, 15008, 17152, 19264, 20167, 22016, 23048, 30016, 34304, 38528, 40334, 44032, 46096, 60032, 68608, 77056, 80668, 92192, 120064, 154112, 161336, 184384, 240128, 308224, 322672, 368768, 480256, 645344, 737536, 1290688, 1475072, 2581376, 2950144, 5162752, 10325504, 20651008]

約数ペア:

[(1, 20651008), (2, 10325504), (4, 5162752), (7, 2950144), (8, 2581376), (14, 1475072), (16, 1290688), (28, 737536), (32, 645344), (43, 480256), (56, 368768), (64, 322672), (67, 308224), (86, 240128), (112, 184384), (128, 161336), (134, 154112), (172, 120064), (224, 92192), (256, 80668), (268, 77056), (301, 68608), (344, 60032), (448, 46096), (469, 44032), (512, 40334), (536, 38528), (602, 34304), (688, 30016), (896, 23048), (938, 22016), (1024, 20167), (1072, 19264), (1204, 17152), (1376, 15008), (1792, 11524), (1876, 11008), (2144, 9632), (2408, 8576), (2752, 7504), (2881, 7168), (3584, 5762), (3752, 5504), (4288, 4816)]