1312500

素因数分解:

$2^2\times 3^1\times 5^6\times 7^1$

素因数の和:44

約数の個数: 84

約数和(自身を含む): 4374944

約数和(自身を除く): 3062444

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 125, 140, 150, 175, 210, 250, 300, 350, 375, 420, 500, 525, 625, 700, 750, 875, 1050, 1250, 1500, 1750, 1875, 2100, 2500, 2625, 3125, 3500, 3750, 4375, 5250, 6250, 7500, 8750, 9375, 10500, 12500, 13125, 15625, 17500, 18750, 21875, 26250, 31250, 37500, 43750, 46875, 52500, 62500, 65625, 87500, 93750, 109375, 131250, 187500, 218750, 262500, 328125, 437500, 656250, 1312500]

約数ペア:

[(1, 1312500), (2, 656250), (3, 437500), (4, 328125), (5, 262500), (6, 218750), (7, 187500), (10, 131250), (12, 109375), (14, 93750), (15, 87500), (20, 65625), (21, 62500), (25, 52500), (28, 46875), (30, 43750), (35, 37500), (42, 31250), (50, 26250), (60, 21875), (70, 18750), (75, 17500), (84, 15625), (100, 13125), (105, 12500), (125, 10500), (140, 9375), (150, 8750), (175, 7500), (210, 6250), (250, 5250), (300, 4375), (350, 3750), (375, 3500), (420, 3125), (500, 2625), (525, 2500), (625, 2100), (700, 1875), (750, 1750), (875, 1500), (1050, 1250)]