1215000

素因数分解:

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

素因数の和:41

約数の個数: 120

約数和(自身を含む): 4264260

約数和(自身を除く): 3049260

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 27, 30, 36, 40, 45, 50, 54, 60, 72, 75, 81, 90, 100, 108, 120, 125, 135, 150, 162, 180, 200, 216, 225, 243, 250, 270, 300, 324, 360, 375, 405, 450, 486, 500, 540, 600, 625, 648, 675, 750, 810, 900, 972, 1000, 1080, 1125, 1215, 1250, 1350, 1500, 1620, 1800, 1875, 1944, 2025, 2250, 2430, 2500, 2700, 3000, 3240, 3375, 3750, 4050, 4500, 4860, 5000, 5400, 5625, 6075, 6750, 7500, 8100, 9000, 9720, 10125, 11250, 12150, 13500, 15000, 16200, 16875, 20250, 22500, 24300, 27000, 30375, 33750, 40500, 45000, 48600, 50625, 60750, 67500, 81000, 101250, 121500, 135000, 151875, 202500, 243000, 303750, 405000, 607500, 1215000]

約数ペア:

[(1, 1215000), (2, 607500), (3, 405000), (4, 303750), (5, 243000), (6, 202500), (8, 151875), (9, 135000), (10, 121500), (12, 101250), (15, 81000), (18, 67500), (20, 60750), (24, 50625), (25, 48600), (27, 45000), (30, 40500), (36, 33750), (40, 30375), (45, 27000), (50, 24300), (54, 22500), (60, 20250), (72, 16875), (75, 16200), (81, 15000), (90, 13500), (100, 12150), (108, 11250), (120, 10125), (125, 9720), (135, 9000), (150, 8100), (162, 7500), (180, 6750), (200, 6075), (216, 5625), (225, 5400), (243, 5000), (250, 4860), (270, 4500), (300, 4050), (324, 3750), (360, 3375), (375, 3240), (405, 3000), (450, 2700), (486, 2500), (500, 2430), (540, 2250), (600, 2025), (625, 1944), (648, 1875), (675, 1800), (750, 1620), (810, 1500), (900, 1350), (972, 1250), (1000, 1215), (1080, 1125)]