21869704

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{277}}^1$

素因数の和:493

約数の個数: 32

約数和(自身を含む): 42033600

約数和(自身を除く): 20163896

約数列:

[1, 2, 4, 8, 71, 139, 142, 277, 278, 284, 554, 556, 568, 1108, 1112, 2216, 9869, 19667, 19738, 38503, 39334, 39476, 77006, 78668, 78952, 154012, 157336, 308024, 2733713, 5467426, 10934852, 21869704]

約数ペア:

[(1, 21869704), (2, 10934852), (4, 5467426), (8, 2733713), (71, 308024), (139, 157336), (142, 154012), (277, 78952), (278, 78668), (284, 77006), (554, 39476), (556, 39334), (568, 38503), (1108, 19738), (1112, 19667), (2216, 9869)]