71200000

素因数分解:

$2^8\times 5^5\times {\mathrm{89}}^1$

素因数の和:130

約数の個数: 108

約数和(自身を含む): 179636940

約数和(自身を除く): 108436940

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, 256, 320, 356, 400, 445, 500, 625, 640, 712, 800, 890, 1000, 1250, 1280, 1424, 1600, 1780, 2000, 2225, 2500, 2848, 3125, 3200, 3560, 4000, 4450, 5000, 5696, 6250, 6400, 7120, 8000, 8900, 10000, 11125, 11392, 12500, 14240, 16000, 17800, 20000, 22250, 22784, 25000, 28480, 32000, 35600, 40000, 44500, 50000, 55625, 56960, 71200, 80000, 89000, 100000, 111250, 113920, 142400, 160000, 178000, 200000, 222500, 278125, 284800, 356000, 400000, 445000, 556250, 569600, 712000, 800000, 890000, 1112500, 1424000, 1780000, 2225000, 2848000, 3560000, 4450000, 7120000, 8900000, 14240000, 17800000, 35600000, 71200000]

約数ペア:

[(1, 71200000), (2, 35600000), (4, 17800000), (5, 14240000), (8, 8900000), (10, 7120000), (16, 4450000), (20, 3560000), (25, 2848000), (32, 2225000), (40, 1780000), (50, 1424000), (64, 1112500), (80, 890000), (89, 800000), (100, 712000), (125, 569600), (128, 556250), (160, 445000), (178, 400000), (200, 356000), (250, 284800), (256, 278125), (320, 222500), (356, 200000), (400, 178000), (445, 160000), (500, 142400), (625, 113920), (640, 111250), (712, 100000), (800, 89000), (890, 80000), (1000, 71200), (1250, 56960), (1280, 55625), (1424, 50000), (1600, 44500), (1780, 40000), (2000, 35600), (2225, 32000), (2500, 28480), (2848, 25000), (3125, 22784), (3200, 22250), (3560, 20000), (4000, 17800), (4450, 16000), (5000, 14240), (5696, 12500), (6250, 11392), (6400, 11125), (7120, 10000), (8000, 8900)]