280798000

素因数分解:

$2^4\times 5^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{647}}^1$

素因数の和:708

約数の個数: 160

約数和(自身を含む): 802234368

約数和(自身を除く): 521436368

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 31, 35, 40, 50, 56, 62, 70, 80, 100, 112, 124, 125, 140, 155, 175, 200, 217, 248, 250, 280, 310, 350, 400, 434, 496, 500, 560, 620, 647, 700, 775, 868, 875, 1000, 1085, 1240, 1294, 1400, 1550, 1736, 1750, 2000, 2170, 2480, 2588, 2800, 3100, 3235, 3472, 3500, 3875, 4340, 4529, 5176, 5425, 6200, 6470, 7000, 7750, 8680, 9058, 10352, 10850, 12400, 12940, 14000, 15500, 16175, 17360, 18116, 20057, 21700, 22645, 25880, 27125, 31000, 32350, 36232, 40114, 43400, 45290, 51760, 54250, 62000, 64700, 72464, 80228, 80875, 86800, 90580, 100285, 108500, 113225, 129400, 140399, 160456, 161750, 181160, 200570, 217000, 226450, 258800, 280798, 320912, 323500, 362320, 401140, 434000, 452900, 501425, 561596, 566125, 647000, 701995, 802280, 905800, 1002850, 1123192, 1132250, 1294000, 1403990, 1604560, 1811600, 2005700, 2246384, 2264500, 2507125, 2807980, 3509975, 4011400, 4529000, 5014250, 5615960, 7019950, 8022800, 9058000, 10028500, 11231920, 14039900, 17549875, 20057000, 28079800, 35099750, 40114000, 56159600, 70199500, 140399000, 280798000]

約数ペア:

[(1, 280798000), (2, 140399000), (4, 70199500), (5, 56159600), (7, 40114000), (8, 35099750), (10, 28079800), (14, 20057000), (16, 17549875), (20, 14039900), (25, 11231920), (28, 10028500), (31, 9058000), (35, 8022800), (40, 7019950), (50, 5615960), (56, 5014250), (62, 4529000), (70, 4011400), (80, 3509975), (100, 2807980), (112, 2507125), (124, 2264500), (125, 2246384), (140, 2005700), (155, 1811600), (175, 1604560), (200, 1403990), (217, 1294000), (248, 1132250), (250, 1123192), (280, 1002850), (310, 905800), (350, 802280), (400, 701995), (434, 647000), (496, 566125), (500, 561596), (560, 501425), (620, 452900), (647, 434000), (700, 401140), (775, 362320), (868, 323500), (875, 320912), (1000, 280798), (1085, 258800), (1240, 226450), (1294, 217000), (1400, 200570), (1550, 181160), (1736, 161750), (1750, 160456), (2000, 140399), (2170, 129400), (2480, 113225), (2588, 108500), (2800, 100285), (3100, 90580), (3235, 86800), (3472, 80875), (3500, 80228), (3875, 72464), (4340, 64700), (4529, 62000), (5176, 54250), (5425, 51760), (6200, 45290), (6470, 43400), (7000, 40114), (7750, 36232), (8680, 32350), (9058, 31000), (10352, 27125), (10850, 25880), (12400, 22645), (12940, 21700), (14000, 20057), (15500, 18116), (16175, 17360)]