645604418

素因数分解:

$2^1\times {\mathrm{131}}^1\times {\mathrm{419}}^1\times {\mathrm{5881}}^1$

素因数の和:6433

約数の個数: 16

約数和(自身を含む): 978294240

約数和(自身を除く): 332689822

約数列:

[1, 2, 131, 262, 419, 838, 5881, 11762, 54889, 109778, 770411, 1540822, 2464139, 4928278, 322802209, 645604418]

約数ペア:

[(1, 645604418), (2, 322802209), (131, 4928278), (262, 2464139), (419, 1540822), (838, 770411), (5881, 109778), (11762, 54889)]