217924140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{518867}}^1$

素因数の和:518886

約数の個数: 48

約数和(自身を含む): 697358592

約数和(自身を除く): 479434452

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, 420, 518867, 1037734, 1556601, 2075468, 2594335, 3113202, 3632069, 5188670, 6226404, 7264138, 7783005, 10377340, 10896207, 14528276, 15566010, 18160345, 21792414, 31132020, 36320690, 43584828, 54481035, 72641380, 108962070, 217924140]

約数ペア:

[(1, 217924140), (2, 108962070), (3, 72641380), (4, 54481035), (5, 43584828), (6, 36320690), (7, 31132020), (10, 21792414), (12, 18160345), (14, 15566010), (15, 14528276), (20, 10896207), (21, 10377340), (28, 7783005), (30, 7264138), (35, 6226404), (42, 5188670), (60, 3632069), (70, 3113202), (84, 2594335), (105, 2075468), (140, 1556601), (210, 1037734), (420, 518867)]