399972020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{34421}}^1$

素因数の和:34520

約数の個数: 48

約数和(自身を含む): 971526528

約数和(自身を除く): 571554508

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 83, 140, 166, 332, 415, 581, 830, 1162, 1660, 2324, 2905, 5810, 11620, 34421, 68842, 137684, 172105, 240947, 344210, 481894, 688420, 963788, 1204735, 2409470, 2856943, 4818940, 5713886, 11427772, 14284715, 19998601, 28569430, 39997202, 57138860, 79994404, 99993005, 199986010, 399972020]

約数ペア:

[(1, 399972020), (2, 199986010), (4, 99993005), (5, 79994404), (7, 57138860), (10, 39997202), (14, 28569430), (20, 19998601), (28, 14284715), (35, 11427772), (70, 5713886), (83, 4818940), (140, 2856943), (166, 2409470), (332, 1204735), (415, 963788), (581, 688420), (830, 481894), (1162, 344210), (1660, 240947), (2324, 172105), (2905, 137684), (5810, 68842), (11620, 34421)]