208565505

素因数分解:

$3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1\times {\mathrm{421}}^1$

素因数の和:642

約数の個数: 48

約数和(自身を含む): 369317520

約数和(自身を除く): 160752015

約数列:

[1, 3, 5, 9, 15, 45, 101, 109, 303, 327, 421, 505, 545, 909, 981, 1263, 1515, 1635, 2105, 3789, 4545, 4905, 6315, 11009, 18945, 33027, 42521, 45889, 55045, 99081, 127563, 137667, 165135, 212605, 229445, 382689, 413001, 495405, 637815, 688335, 1913445, 2065005, 4634789, 13904367, 23173945, 41713101, 69521835, 208565505]

約数ペア:

[(1, 208565505), (3, 69521835), (5, 41713101), (9, 23173945), (15, 13904367), (45, 4634789), (101, 2065005), (109, 1913445), (303, 688335), (327, 637815), (421, 495405), (505, 413001), (545, 382689), (909, 229445), (981, 212605), (1263, 165135), (1515, 137667), (1635, 127563), (2105, 99081), (3789, 55045), (4545, 45889), (4905, 42521), (6315, 33027), (11009, 18945)]