217347515

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{3119}}^1$

素因数の和:3323

約数の個数: 32

約数和(自身を含む): 327075840

約数和(自身を除く): 109728325

約数列:

[1, 5, 7, 11, 35, 55, 77, 181, 385, 905, 1267, 1991, 3119, 6335, 9955, 13937, 15595, 21833, 34309, 69685, 109165, 171545, 240163, 564539, 1200815, 2822695, 3951773, 6209929, 19758865, 31049645, 43469503, 217347515]

約数ペア:

[(1, 217347515), (5, 43469503), (7, 31049645), (11, 19758865), (35, 6209929), (55, 3951773), (77, 2822695), (181, 1200815), (385, 564539), (905, 240163), (1267, 171545), (1991, 109165), (3119, 69685), (6335, 34309), (9955, 21833), (13937, 15595)]