21017920

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{853}}^1$

素因数の和:888

約数の個数: 112

約数和(自身を含む): 62471808

約数和(自身を除く): 41453888

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 55, 56, 64, 70, 77, 80, 88, 110, 112, 140, 154, 160, 176, 220, 224, 280, 308, 320, 352, 385, 440, 448, 560, 616, 704, 770, 853, 880, 1120, 1232, 1540, 1706, 1760, 2240, 2464, 3080, 3412, 3520, 4265, 4928, 5971, 6160, 6824, 8530, 9383, 11942, 12320, 13648, 17060, 18766, 23884, 24640, 27296, 29855, 34120, 37532, 46915, 47768, 54592, 59710, 65681, 68240, 75064, 93830, 95536, 119420, 131362, 136480, 150128, 187660, 191072, 238840, 262724, 272960, 300256, 328405, 375320, 382144, 477680, 525448, 600512, 656810, 750640, 955360, 1050896, 1313620, 1501280, 1910720, 2101792, 2627240, 3002560, 4203584, 5254480, 10508960, 21017920]

約数ペア:

[(1, 21017920), (2, 10508960), (4, 5254480), (5, 4203584), (7, 3002560), (8, 2627240), (10, 2101792), (11, 1910720), (14, 1501280), (16, 1313620), (20, 1050896), (22, 955360), (28, 750640), (32, 656810), (35, 600512), (40, 525448), (44, 477680), (55, 382144), (56, 375320), (64, 328405), (70, 300256), (77, 272960), (80, 262724), (88, 238840), (110, 191072), (112, 187660), (140, 150128), (154, 136480), (160, 131362), (176, 119420), (220, 95536), (224, 93830), (280, 75064), (308, 68240), (320, 65681), (352, 59710), (385, 54592), (440, 47768), (448, 46915), (560, 37532), (616, 34120), (704, 29855), (770, 27296), (853, 24640), (880, 23884), (1120, 18766), (1232, 17060), (1540, 13648), (1706, 12320), (1760, 11942), (2240, 9383), (2464, 8530), (3080, 6824), (3412, 6160), (3520, 5971), (4265, 4928)]