31220000

素因数分解:

$2^5\times 5^4\times 7^1\times {\mathrm{223}}^1$

素因数の和:260

約数の個数: 120

約数和(自身を含む): 88171776

約数和(自身を除く): 56951776

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 70, 80, 100, 112, 125, 140, 160, 175, 200, 223, 224, 250, 280, 350, 400, 446, 500, 560, 625, 700, 800, 875, 892, 1000, 1115, 1120, 1250, 1400, 1561, 1750, 1784, 2000, 2230, 2500, 2800, 3122, 3500, 3568, 4000, 4375, 4460, 5000, 5575, 5600, 6244, 7000, 7136, 7805, 8750, 8920, 10000, 11150, 12488, 14000, 15610, 17500, 17840, 20000, 22300, 24976, 27875, 28000, 31220, 35000, 35680, 39025, 44600, 49952, 55750, 62440, 70000, 78050, 89200, 111500, 124880, 139375, 140000, 156100, 178400, 195125, 223000, 249760, 278750, 312200, 390250, 446000, 557500, 624400, 780500, 892000, 975625, 1115000, 1248800, 1561000, 1951250, 2230000, 3122000, 3902500, 4460000, 6244000, 7805000, 15610000, 31220000]

約数ペア:

[(1, 31220000), (2, 15610000), (4, 7805000), (5, 6244000), (7, 4460000), (8, 3902500), (10, 3122000), (14, 2230000), (16, 1951250), (20, 1561000), (25, 1248800), (28, 1115000), (32, 975625), (35, 892000), (40, 780500), (50, 624400), (56, 557500), (70, 446000), (80, 390250), (100, 312200), (112, 278750), (125, 249760), (140, 223000), (160, 195125), (175, 178400), (200, 156100), (223, 140000), (224, 139375), (250, 124880), (280, 111500), (350, 89200), (400, 78050), (446, 70000), (500, 62440), (560, 55750), (625, 49952), (700, 44600), (800, 39025), (875, 35680), (892, 35000), (1000, 31220), (1115, 28000), (1120, 27875), (1250, 24976), (1400, 22300), (1561, 20000), (1750, 17840), (1784, 17500), (2000, 15610), (2230, 14000), (2500, 12488), (2800, 11150), (3122, 10000), (3500, 8920), (3568, 8750), (4000, 7805), (4375, 7136), (4460, 7000), (5000, 6244), (5575, 5600)]