20247500

素因数分解:

$2^2\times 5^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1$

素因数の和:133

約数の個数: 120

約数和(自身を含む): 55107360

約数和(自身を除く): 34859860

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 50, 52, 65, 70, 89, 91, 100, 125, 130, 140, 175, 178, 182, 250, 260, 325, 350, 356, 364, 445, 455, 500, 623, 625, 650, 700, 875, 890, 910, 1157, 1246, 1250, 1300, 1625, 1750, 1780, 1820, 2225, 2275, 2314, 2492, 2500, 3115, 3250, 3500, 4375, 4450, 4550, 4628, 5785, 6230, 6500, 8099, 8125, 8750, 8900, 9100, 11125, 11375, 11570, 12460, 15575, 16198, 16250, 17500, 22250, 22750, 23140, 28925, 31150, 32396, 32500, 40495, 44500, 45500, 55625, 56875, 57850, 62300, 77875, 80990, 111250, 113750, 115700, 144625, 155750, 161980, 202475, 222500, 227500, 289250, 311500, 389375, 404950, 578500, 723125, 778750, 809900, 1012375, 1446250, 1557500, 2024750, 2892500, 4049500, 5061875, 10123750, 20247500]

約数ペア:

[(1, 20247500), (2, 10123750), (4, 5061875), (5, 4049500), (7, 2892500), (10, 2024750), (13, 1557500), (14, 1446250), (20, 1012375), (25, 809900), (26, 778750), (28, 723125), (35, 578500), (50, 404950), (52, 389375), (65, 311500), (70, 289250), (89, 227500), (91, 222500), (100, 202475), (125, 161980), (130, 155750), (140, 144625), (175, 115700), (178, 113750), (182, 111250), (250, 80990), (260, 77875), (325, 62300), (350, 57850), (356, 56875), (364, 55625), (445, 45500), (455, 44500), (500, 40495), (623, 32500), (625, 32396), (650, 31150), (700, 28925), (875, 23140), (890, 22750), (910, 22250), (1157, 17500), (1246, 16250), (1250, 16198), (1300, 15575), (1625, 12460), (1750, 11570), (1780, 11375), (1820, 11125), (2225, 9100), (2275, 8900), (2314, 8750), (2492, 8125), (2500, 8099), (3115, 6500), (3250, 6230), (3500, 5785), (4375, 4628), (4450, 4550)]