51981488

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{249911}}^1$

素因数の和:249932

約数の個数: 20

約数和(自身を含む): 108461808

約数和(自身を除く): 56480320

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 249911, 499822, 999644, 1999288, 3248843, 3998576, 6497686, 12995372, 25990744, 51981488]

約数ペア:

[(1, 51981488), (2, 25990744), (4, 12995372), (8, 6497686), (13, 3998576), (16, 3248843), (26, 1999288), (52, 999644), (104, 499822), (208, 249911)]