256945180

素因数分解:

$2^2\times 5^1\times {\mathrm{479}}^1\times {\mathrm{26821}}^1$

素因数の和:27309

約数の個数: 24

約数和(自身を含む): 540731520

約数和(自身を除く): 283786340

約数列:

[1, 2, 4, 5, 10, 20, 479, 958, 1916, 2395, 4790, 9580, 26821, 53642, 107284, 134105, 268210, 536420, 12847259, 25694518, 51389036, 64236295, 128472590, 256945180]

約数ペア:

[(1, 256945180), (2, 128472590), (4, 64236295), (5, 51389036), (10, 25694518), (20, 12847259), (479, 536420), (958, 268210), (1916, 134105), (2395, 107284), (4790, 53642), (9580, 26821)]