212415

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{17}}^2$

素因数の和:56

約数の個数: 36

約数和(自身を含む): 419976

約数和(自身を除く): 207561

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 49, 51, 85, 105, 119, 147, 245, 255, 289, 357, 595, 735, 833, 867, 1445, 1785, 2023, 2499, 4165, 4335, 6069, 10115, 12495, 14161, 30345, 42483, 70805, 212415]

約数ペア:

[(1, 212415), (3, 70805), (5, 42483), (7, 30345), (15, 14161), (17, 12495), (21, 10115), (35, 6069), (49, 4335), (51, 4165), (85, 2499), (105, 2023), (119, 1785), (147, 1445), (245, 867), (255, 833), (289, 735), (357, 595)]