19987800

素因数分解:

$2^3\times 3^1\times 5^2\times 7^1\times {\mathrm{4759}}^1$

素因数の和:4785

約数の個数: 96

約数和(自身を含む): 70828800

約数和(自身を除く): 50841000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 25, 28, 30, 35, 40, 42, 50, 56, 60, 70, 75, 84, 100, 105, 120, 140, 150, 168, 175, 200, 210, 280, 300, 350, 420, 525, 600, 700, 840, 1050, 1400, 2100, 4200, 4759, 9518, 14277, 19036, 23795, 28554, 33313, 38072, 47590, 57108, 66626, 71385, 95180, 99939, 114216, 118975, 133252, 142770, 166565, 190360, 199878, 237950, 266504, 285540, 333130, 356925, 399756, 475900, 499695, 571080, 666260, 713850, 799512, 832825, 951800, 999390, 1332520, 1427700, 1665650, 1998780, 2498475, 2855400, 3331300, 3997560, 4996950, 6662600, 9993900, 19987800]

約数ペア:

[(1, 19987800), (2, 9993900), (3, 6662600), (4, 4996950), (5, 3997560), (6, 3331300), (7, 2855400), (8, 2498475), (10, 1998780), (12, 1665650), (14, 1427700), (15, 1332520), (20, 999390), (21, 951800), (24, 832825), (25, 799512), (28, 713850), (30, 666260), (35, 571080), (40, 499695), (42, 475900), (50, 399756), (56, 356925), (60, 333130), (70, 285540), (75, 266504), (84, 237950), (100, 199878), (105, 190360), (120, 166565), (140, 142770), (150, 133252), (168, 118975), (175, 114216), (200, 99939), (210, 95180), (280, 71385), (300, 66626), (350, 57108), (420, 47590), (525, 38072), (600, 33313), (700, 28554), (840, 23795), (1050, 19036), (1400, 14277), (2100, 9518), (4200, 4759)]