21405000

素因数分解:

$2^3\times 3^1\times 5^4\times {\mathrm{1427}}^1$

素因数の和:1456

約数の個数: 80

約数和(自身を含む): 66916080

約数和(自身を除く): 45511080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 25, 30, 40, 50, 60, 75, 100, 120, 125, 150, 200, 250, 300, 375, 500, 600, 625, 750, 1000, 1250, 1427, 1500, 1875, 2500, 2854, 3000, 3750, 4281, 5000, 5708, 7135, 7500, 8562, 11416, 14270, 15000, 17124, 21405, 28540, 34248, 35675, 42810, 57080, 71350, 85620, 107025, 142700, 171240, 178375, 214050, 285400, 356750, 428100, 535125, 713500, 856200, 891875, 1070250, 1427000, 1783750, 2140500, 2675625, 3567500, 4281000, 5351250, 7135000, 10702500, 21405000]

約数ペア:

[(1, 21405000), (2, 10702500), (3, 7135000), (4, 5351250), (5, 4281000), (6, 3567500), (8, 2675625), (10, 2140500), (12, 1783750), (15, 1427000), (20, 1070250), (24, 891875), (25, 856200), (30, 713500), (40, 535125), (50, 428100), (60, 356750), (75, 285400), (100, 214050), (120, 178375), (125, 171240), (150, 142700), (200, 107025), (250, 85620), (300, 71350), (375, 57080), (500, 42810), (600, 35675), (625, 34248), (750, 28540), (1000, 21405), (1250, 17124), (1427, 15000), (1500, 14270), (1875, 11416), (2500, 8562), (2854, 7500), (3000, 7135), (3750, 5708), (4281, 5000)]