640475402

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1236439}}^1$

素因数の和:1236485

約数の個数: 16

約数和(自身を含む): 1127633280

約数和(自身を除く): 487157878

約数列:

[1, 2, 7, 14, 37, 74, 259, 518, 1236439, 2472878, 8655073, 17310146, 45748243, 91496486, 320237701, 640475402]

約数ペア:

[(1, 640475402), (2, 320237701), (7, 91496486), (14, 45748243), (37, 17310146), (74, 8655073), (259, 2472878), (518, 1236439)]