210840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{251}}^1$

素因数の和:272

約数の個数: 64

約数和(自身を含む): 725760

約数和(自身を除く): 514920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 251, 280, 420, 502, 753, 840, 1004, 1255, 1506, 1757, 2008, 2510, 3012, 3514, 3765, 5020, 5271, 6024, 7028, 7530, 8785, 10040, 10542, 14056, 15060, 17570, 21084, 26355, 30120, 35140, 42168, 52710, 70280, 105420, 210840]

約数ペア:

[(1, 210840), (2, 105420), (3, 70280), (4, 52710), (5, 42168), (6, 35140), (7, 30120), (8, 26355), (10, 21084), (12, 17570), (14, 15060), (15, 14056), (20, 10542), (21, 10040), (24, 8785), (28, 7530), (30, 7028), (35, 6024), (40, 5271), (42, 5020), (56, 3765), (60, 3514), (70, 3012), (84, 2510), (105, 2008), (120, 1757), (140, 1506), (168, 1255), (210, 1004), (251, 840), (280, 753), (420, 502)]