80678500

素因数分解:

$2^2\times 5^3\times 7^2\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:159

約数の個数: 144

約数和(自身を含む): 212874480

約数和(自身を除く): 132195980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 37, 49, 50, 70, 74, 89, 98, 100, 125, 140, 148, 175, 178, 185, 196, 245, 250, 259, 350, 356, 370, 445, 490, 500, 518, 623, 700, 740, 875, 890, 925, 980, 1036, 1225, 1246, 1295, 1750, 1780, 1813, 1850, 2225, 2450, 2492, 2590, 3115, 3293, 3500, 3626, 3700, 4361, 4450, 4625, 4900, 5180, 6125, 6230, 6475, 6586, 7252, 8722, 8900, 9065, 9250, 11125, 12250, 12460, 12950, 13172, 15575, 16465, 17444, 18130, 18500, 21805, 22250, 23051, 24500, 25900, 31150, 32375, 32930, 36260, 43610, 44500, 45325, 46102, 62300, 64750, 65860, 77875, 82325, 87220, 90650, 92204, 109025, 115255, 129500, 155750, 161357, 164650, 181300, 218050, 226625, 230510, 311500, 322714, 329300, 411625, 436100, 453250, 461020, 545125, 576275, 645428, 806785, 823250, 906500, 1090250, 1152550, 1613570, 1646500, 2180500, 2305100, 2881375, 3227140, 4033925, 5762750, 8067850, 11525500, 16135700, 20169625, 40339250, 80678500]

約数ペア:

[(1, 80678500), (2, 40339250), (4, 20169625), (5, 16135700), (7, 11525500), (10, 8067850), (14, 5762750), (20, 4033925), (25, 3227140), (28, 2881375), (35, 2305100), (37, 2180500), (49, 1646500), (50, 1613570), (70, 1152550), (74, 1090250), (89, 906500), (98, 823250), (100, 806785), (125, 645428), (140, 576275), (148, 545125), (175, 461020), (178, 453250), (185, 436100), (196, 411625), (245, 329300), (250, 322714), (259, 311500), (350, 230510), (356, 226625), (370, 218050), (445, 181300), (490, 164650), (500, 161357), (518, 155750), (623, 129500), (700, 115255), (740, 109025), (875, 92204), (890, 90650), (925, 87220), (980, 82325), (1036, 77875), (1225, 65860), (1246, 64750), (1295, 62300), (1750, 46102), (1780, 45325), (1813, 44500), (1850, 43610), (2225, 36260), (2450, 32930), (2492, 32375), (2590, 31150), (3115, 25900), (3293, 24500), (3500, 23051), (3626, 22250), (3700, 21805), (4361, 18500), (4450, 18130), (4625, 17444), (4900, 16465), (5180, 15575), (6125, 13172), (6230, 12950), (6475, 12460), (6586, 12250), (7252, 11125), (8722, 9250), (8900, 9065)]