25571312

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{122939}}^1$

素因数の和:122960

約数の個数: 20

約数和(自身を含む): 53355960

約数和(自身を除く): 27784648

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 122939, 245878, 491756, 983512, 1598207, 1967024, 3196414, 6392828, 12785656, 25571312]

約数ペア:

[(1, 25571312), (2, 12785656), (4, 6392828), (8, 3196414), (13, 1967024), (16, 1598207), (26, 983512), (52, 491756), (104, 245878), (208, 122939)]