65625000

素因数分解:

$2^3\times 3^1\times 5^8\times 7^1$

素因数の和:56

約数の個数: 144

約数和(自身を含む): 234374880

約数和(自身を除く): 168749880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 25, 28, 30, 35, 40, 42, 50, 56, 60, 70, 75, 84, 100, 105, 120, 125, 140, 150, 168, 175, 200, 210, 250, 280, 300, 350, 375, 420, 500, 525, 600, 625, 700, 750, 840, 875, 1000, 1050, 1250, 1400, 1500, 1750, 1875, 2100, 2500, 2625, 3000, 3125, 3500, 3750, 4200, 4375, 5000, 5250, 6250, 7000, 7500, 8750, 9375, 10500, 12500, 13125, 15000, 15625, 17500, 18750, 21000, 21875, 25000, 26250, 31250, 35000, 37500, 43750, 46875, 52500, 62500, 65625, 75000, 78125, 87500, 93750, 105000, 109375, 125000, 131250, 156250, 175000, 187500, 218750, 234375, 262500, 312500, 328125, 375000, 390625, 437500, 468750, 525000, 546875, 625000, 656250, 781250, 875000, 937500, 1093750, 1171875, 1312500, 1562500, 1640625, 1875000, 2187500, 2343750, 2625000, 2734375, 3125000, 3281250, 4375000, 4687500, 5468750, 6562500, 8203125, 9375000, 10937500, 13125000, 16406250, 21875000, 32812500, 65625000]

約数ペア:

[(1, 65625000), (2, 32812500), (3, 21875000), (4, 16406250), (5, 13125000), (6, 10937500), (7, 9375000), (8, 8203125), (10, 6562500), (12, 5468750), (14, 4687500), (15, 4375000), (20, 3281250), (21, 3125000), (24, 2734375), (25, 2625000), (28, 2343750), (30, 2187500), (35, 1875000), (40, 1640625), (42, 1562500), (50, 1312500), (56, 1171875), (60, 1093750), (70, 937500), (75, 875000), (84, 781250), (100, 656250), (105, 625000), (120, 546875), (125, 525000), (140, 468750), (150, 437500), (168, 390625), (175, 375000), (200, 328125), (210, 312500), (250, 262500), (280, 234375), (300, 218750), (350, 187500), (375, 175000), (420, 156250), (500, 131250), (525, 125000), (600, 109375), (625, 105000), (700, 93750), (750, 87500), (840, 78125), (875, 75000), (1000, 65625), (1050, 62500), (1250, 52500), (1400, 46875), (1500, 43750), (1750, 37500), (1875, 35000), (2100, 31250), (2500, 26250), (2625, 25000), (3000, 21875), (3125, 21000), (3500, 18750), (3750, 17500), (4200, 15625), (4375, 15000), (5000, 13125), (5250, 12500), (6250, 10500), (7000, 9375), (7500, 8750)]