21894568

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{63647}}^1$

素因数の和:63696

約数の個数: 16

約数和(自身を含む): 42007680

約数和(自身を除く): 20113112

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 63647, 127294, 254588, 509176, 2736821, 5473642, 10947284, 21894568]

約数ペア:

[(1, 21894568), (2, 10947284), (4, 5473642), (8, 2736821), (43, 509176), (86, 254588), (172, 127294), (344, 63647)]