7120000

素因数分解:

$2^7\times 5^4\times {\mathrm{89}}^1$

素因数の和:123

約数の個数: 80

約数和(自身を含む): 17923950

約数和(自身を除く): 10803950

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 89, 100, 125, 128, 160, 178, 200, 250, 320, 356, 400, 445, 500, 625, 640, 712, 800, 890, 1000, 1250, 1424, 1600, 1780, 2000, 2225, 2500, 2848, 3200, 3560, 4000, 4450, 5000, 5696, 7120, 8000, 8900, 10000, 11125, 11392, 14240, 16000, 17800, 20000, 22250, 28480, 35600, 40000, 44500, 55625, 56960, 71200, 80000, 89000, 111250, 142400, 178000, 222500, 284800, 356000, 445000, 712000, 890000, 1424000, 1780000, 3560000, 7120000]

約数ペア:

[(1, 7120000), (2, 3560000), (4, 1780000), (5, 1424000), (8, 890000), (10, 712000), (16, 445000), (20, 356000), (25, 284800), (32, 222500), (40, 178000), (50, 142400), (64, 111250), (80, 89000), (89, 80000), (100, 71200), (125, 56960), (128, 55625), (160, 44500), (178, 40000), (200, 35600), (250, 28480), (320, 22250), (356, 20000), (400, 17800), (445, 16000), (500, 14240), (625, 11392), (640, 11125), (712, 10000), (800, 8900), (890, 8000), (1000, 7120), (1250, 5696), (1424, 5000), (1600, 4450), (1780, 4000), (2000, 3560), (2225, 3200), (2500, 2848)]