128204500

素因数分解:

$2^2\times 5^3\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1$

素因数の和:218

約数の個数: 96

約数和(自身を含む): 294053760

約数和(自身を除く): 165849260

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 67, 86, 89, 100, 125, 134, 172, 178, 215, 250, 268, 335, 356, 430, 445, 500, 670, 860, 890, 1075, 1340, 1675, 1780, 2150, 2225, 2881, 3350, 3827, 4300, 4450, 5375, 5762, 5963, 6700, 7654, 8375, 8900, 10750, 11125, 11524, 11926, 14405, 15308, 16750, 19135, 21500, 22250, 23852, 28810, 29815, 33500, 38270, 44500, 57620, 59630, 72025, 76540, 95675, 119260, 144050, 149075, 191350, 256409, 288100, 298150, 360125, 382700, 478375, 512818, 596300, 720250, 745375, 956750, 1025636, 1282045, 1440500, 1490750, 1913500, 2564090, 2981500, 5128180, 6410225, 12820450, 25640900, 32051125, 64102250, 128204500]

約数ペア:

[(1, 128204500), (2, 64102250), (4, 32051125), (5, 25640900), (10, 12820450), (20, 6410225), (25, 5128180), (43, 2981500), (50, 2564090), (67, 1913500), (86, 1490750), (89, 1440500), (100, 1282045), (125, 1025636), (134, 956750), (172, 745375), (178, 720250), (215, 596300), (250, 512818), (268, 478375), (335, 382700), (356, 360125), (430, 298150), (445, 288100), (500, 256409), (670, 191350), (860, 149075), (890, 144050), (1075, 119260), (1340, 95675), (1675, 76540), (1780, 72025), (2150, 59630), (2225, 57620), (2881, 44500), (3350, 38270), (3827, 33500), (4300, 29815), (4450, 28810), (5375, 23852), (5762, 22250), (5963, 21500), (6700, 19135), (7654, 16750), (8375, 15308), (8900, 14405), (10750, 11926), (11125, 11524)]