861000

素因数分解:

$2^3\times 3^1\times 5^3\times 7^1\times {\mathrm{41}}^1$

素因数の和:72

約数の個数: 128

約数和(自身を含む): 3144960

約数和(自身を除く): 2283960

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 25, 28, 30, 35, 40, 41, 42, 50, 56, 60, 70, 75, 82, 84, 100, 105, 120, 123, 125, 140, 150, 164, 168, 175, 200, 205, 210, 246, 250, 280, 287, 300, 328, 350, 375, 410, 420, 492, 500, 525, 574, 600, 615, 700, 750, 820, 840, 861, 875, 984, 1000, 1025, 1050, 1148, 1230, 1400, 1435, 1500, 1640, 1722, 1750, 2050, 2100, 2296, 2460, 2625, 2870, 3000, 3075, 3444, 3500, 4100, 4200, 4305, 4920, 5125, 5250, 5740, 6150, 6888, 7000, 7175, 8200, 8610, 10250, 10500, 11480, 12300, 14350, 15375, 17220, 20500, 21000, 21525, 24600, 28700, 30750, 34440, 35875, 41000, 43050, 57400, 61500, 71750, 86100, 107625, 123000, 143500, 172200, 215250, 287000, 430500, 861000]

約数ペア:

[(1, 861000), (2, 430500), (3, 287000), (4, 215250), (5, 172200), (6, 143500), (7, 123000), (8, 107625), (10, 86100), (12, 71750), (14, 61500), (15, 57400), (20, 43050), (21, 41000), (24, 35875), (25, 34440), (28, 30750), (30, 28700), (35, 24600), (40, 21525), (41, 21000), (42, 20500), (50, 17220), (56, 15375), (60, 14350), (70, 12300), (75, 11480), (82, 10500), (84, 10250), (100, 8610), (105, 8200), (120, 7175), (123, 7000), (125, 6888), (140, 6150), (150, 5740), (164, 5250), (168, 5125), (175, 4920), (200, 4305), (205, 4200), (210, 4100), (246, 3500), (250, 3444), (280, 3075), (287, 3000), (300, 2870), (328, 2625), (350, 2460), (375, 2296), (410, 2100), (420, 2050), (492, 1750), (500, 1722), (525, 1640), (574, 1500), (600, 1435), (615, 1400), (700, 1230), (750, 1148), (820, 1050), (840, 1025), (861, 1000), (875, 984)]