20930800

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:167

約数の個数: 120

約数和(自身を含む): 56460672

約数和(自身を除く): 35529872

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 67, 71, 80, 88, 100, 110, 134, 142, 176, 200, 220, 268, 275, 284, 335, 355, 400, 440, 536, 550, 568, 670, 710, 737, 781, 880, 1072, 1100, 1136, 1340, 1420, 1474, 1562, 1675, 1775, 2200, 2680, 2840, 2948, 3124, 3350, 3550, 3685, 3905, 4400, 4757, 5360, 5680, 5896, 6248, 6700, 7100, 7370, 7810, 9514, 11792, 12496, 13400, 14200, 14740, 15620, 18425, 19028, 19525, 23785, 26800, 28400, 29480, 31240, 36850, 38056, 39050, 47570, 52327, 58960, 62480, 73700, 76112, 78100, 95140, 104654, 118925, 147400, 156200, 190280, 209308, 237850, 261635, 294800, 312400, 380560, 418616, 475700, 523270, 837232, 951400, 1046540, 1308175, 1902800, 2093080, 2616350, 4186160, 5232700, 10465400, 20930800]

約数ペア:

[(1, 20930800), (2, 10465400), (4, 5232700), (5, 4186160), (8, 2616350), (10, 2093080), (11, 1902800), (16, 1308175), (20, 1046540), (22, 951400), (25, 837232), (40, 523270), (44, 475700), (50, 418616), (55, 380560), (67, 312400), (71, 294800), (80, 261635), (88, 237850), (100, 209308), (110, 190280), (134, 156200), (142, 147400), (176, 118925), (200, 104654), (220, 95140), (268, 78100), (275, 76112), (284, 73700), (335, 62480), (355, 58960), (400, 52327), (440, 47570), (536, 39050), (550, 38056), (568, 36850), (670, 31240), (710, 29480), (737, 28400), (781, 26800), (880, 23785), (1072, 19525), (1100, 19028), (1136, 18425), (1340, 15620), (1420, 14740), (1474, 14200), (1562, 13400), (1675, 12496), (1775, 11792), (2200, 9514), (2680, 7810), (2840, 7370), (2948, 7100), (3124, 6700), (3350, 6248), (3550, 5896), (3685, 5680), (3905, 5360), (4400, 4757)]