21246836

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{487}}^1\times {\mathrm{839}}^1$

素因数の和:1343

約数の個数: 24

約数和(自身を含む): 40172160

約数和(自身を除く): 18925324

約数列:

[1, 2, 4, 13, 26, 52, 487, 839, 974, 1678, 1948, 3356, 6331, 10907, 12662, 21814, 25324, 43628, 408593, 817186, 1634372, 5311709, 10623418, 21246836]

約数ペア:

[(1, 21246836), (2, 10623418), (4, 5311709), (13, 1634372), (26, 817186), (52, 408593), (487, 43628), (839, 25324), (974, 21814), (1678, 12662), (1948, 10907), (3356, 6331)]