25312500

素因数分解:

$2^2\times 3^4\times 5^7$

素因数の和:51

約数の個数: 120

約数和(自身を含む): 82714632

約数和(自身を除く): 57402132

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 45, 50, 54, 60, 75, 81, 90, 100, 108, 125, 135, 150, 162, 180, 225, 250, 270, 300, 324, 375, 405, 450, 500, 540, 625, 675, 750, 810, 900, 1125, 1250, 1350, 1500, 1620, 1875, 2025, 2250, 2500, 2700, 3125, 3375, 3750, 4050, 4500, 5625, 6250, 6750, 7500, 8100, 9375, 10125, 11250, 12500, 13500, 15625, 16875, 18750, 20250, 22500, 28125, 31250, 33750, 37500, 40500, 46875, 50625, 56250, 62500, 67500, 78125, 84375, 93750, 101250, 112500, 140625, 156250, 168750, 187500, 202500, 234375, 253125, 281250, 312500, 337500, 421875, 468750, 506250, 562500, 703125, 843750, 937500, 1012500, 1265625, 1406250, 1687500, 2109375, 2531250, 2812500, 4218750, 5062500, 6328125, 8437500, 12656250, 25312500]

約数ペア:

[(1, 25312500), (2, 12656250), (3, 8437500), (4, 6328125), (5, 5062500), (6, 4218750), (9, 2812500), (10, 2531250), (12, 2109375), (15, 1687500), (18, 1406250), (20, 1265625), (25, 1012500), (27, 937500), (30, 843750), (36, 703125), (45, 562500), (50, 506250), (54, 468750), (60, 421875), (75, 337500), (81, 312500), (90, 281250), (100, 253125), (108, 234375), (125, 202500), (135, 187500), (150, 168750), (162, 156250), (180, 140625), (225, 112500), (250, 101250), (270, 93750), (300, 84375), (324, 78125), (375, 67500), (405, 62500), (450, 56250), (500, 50625), (540, 46875), (625, 40500), (675, 37500), (750, 33750), (810, 31250), (900, 28125), (1125, 22500), (1250, 20250), (1350, 18750), (1500, 16875), (1620, 15625), (1875, 13500), (2025, 12500), (2250, 11250), (2500, 10125), (2700, 9375), (3125, 8100), (3375, 7500), (3750, 6750), (4050, 6250), (4500, 5625)]