1820000

素因数分解:

$2^5\times 5^4\times 7^1\times {\mathrm{13}}^1$

素因数の和:50

約数の個数: 120

約数和(自身を含む): 5510736

約数和(自身を除く): 3690736

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 25, 26, 28, 32, 35, 40, 50, 52, 56, 65, 70, 80, 91, 100, 104, 112, 125, 130, 140, 160, 175, 182, 200, 208, 224, 250, 260, 280, 325, 350, 364, 400, 416, 455, 500, 520, 560, 625, 650, 700, 728, 800, 875, 910, 1000, 1040, 1120, 1250, 1300, 1400, 1456, 1625, 1750, 1820, 2000, 2080, 2275, 2500, 2600, 2800, 2912, 3250, 3500, 3640, 4000, 4375, 4550, 5000, 5200, 5600, 6500, 7000, 7280, 8125, 8750, 9100, 10000, 10400, 11375, 13000, 14000, 14560, 16250, 17500, 18200, 20000, 22750, 26000, 28000, 32500, 35000, 36400, 45500, 52000, 56875, 65000, 70000, 72800, 91000, 113750, 130000, 140000, 182000, 227500, 260000, 364000, 455000, 910000, 1820000]

約数ペア:

[(1, 1820000), (2, 910000), (4, 455000), (5, 364000), (7, 260000), (8, 227500), (10, 182000), (13, 140000), (14, 130000), (16, 113750), (20, 91000), (25, 72800), (26, 70000), (28, 65000), (32, 56875), (35, 52000), (40, 45500), (50, 36400), (52, 35000), (56, 32500), (65, 28000), (70, 26000), (80, 22750), (91, 20000), (100, 18200), (104, 17500), (112, 16250), (125, 14560), (130, 14000), (140, 13000), (160, 11375), (175, 10400), (182, 10000), (200, 9100), (208, 8750), (224, 8125), (250, 7280), (260, 7000), (280, 6500), (325, 5600), (350, 5200), (364, 5000), (400, 4550), (416, 4375), (455, 4000), (500, 3640), (520, 3500), (560, 3250), (625, 2912), (650, 2800), (700, 2600), (728, 2500), (800, 2275), (875, 2080), (910, 2000), (1000, 1820), (1040, 1750), (1120, 1625), (1250, 1456), (1300, 1400)]