105420

素因数分解:

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

素因数の和:270

約数の個数: 48

約数和(自身を含む): 338688

約数和(自身を除く): 233268

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 251, 420, 502, 753, 1004, 1255, 1506, 1757, 2510, 3012, 3514, 3765, 5020, 5271, 7028, 7530, 8785, 10542, 15060, 17570, 21084, 26355, 35140, 52710, 105420]

約数ペア:

[(1, 105420), (2, 52710), (3, 35140), (4, 26355), (5, 21084), (6, 17570), (7, 15060), (10, 10542), (12, 8785), (14, 7530), (15, 7028), (20, 5271), (21, 5020), (28, 3765), (30, 3514), (35, 3012), (42, 2510), (60, 1757), (70, 1506), (84, 1255), (105, 1004), (140, 753), (210, 502), (251, 420)]