20110720

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{67}}^2$

素因数の和:160

約数の個数: 96

約数和(自身を含む): 55777680

約数和(自身を除く): 35666960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 67, 70, 80, 112, 128, 134, 140, 160, 224, 268, 280, 320, 335, 448, 469, 536, 560, 640, 670, 896, 938, 1072, 1120, 1340, 1876, 2144, 2240, 2345, 2680, 3752, 4288, 4480, 4489, 4690, 5360, 7504, 8576, 8978, 9380, 10720, 15008, 17956, 18760, 21440, 22445, 30016, 31423, 35912, 37520, 42880, 44890, 60032, 62846, 71824, 75040, 89780, 125692, 143648, 150080, 157115, 179560, 251384, 287296, 300160, 314230, 359120, 502768, 574592, 628460, 718240, 1005536, 1256920, 1436480, 2011072, 2513840, 2872960, 4022144, 5027680, 10055360, 20110720]

約数ペア:

[(1, 20110720), (2, 10055360), (4, 5027680), (5, 4022144), (7, 2872960), (8, 2513840), (10, 2011072), (14, 1436480), (16, 1256920), (20, 1005536), (28, 718240), (32, 628460), (35, 574592), (40, 502768), (56, 359120), (64, 314230), (67, 300160), (70, 287296), (80, 251384), (112, 179560), (128, 157115), (134, 150080), (140, 143648), (160, 125692), (224, 89780), (268, 75040), (280, 71824), (320, 62846), (335, 60032), (448, 44890), (469, 42880), (536, 37520), (560, 35912), (640, 31423), (670, 30016), (896, 22445), (938, 21440), (1072, 18760), (1120, 17956), (1340, 15008), (1876, 10720), (2144, 9380), (2240, 8978), (2345, 8576), (2680, 7504), (3752, 5360), (4288, 4690), (4480, 4489)]