21286568

素因数分解:

$2^3\times {\mathrm{191}}^1\times {\mathrm{13931}}^1$

素因数の和:14128

約数の個数: 16

約数和(自身を含む): 40124160

約数和(自身を除く): 18837592

約数列:

[1, 2, 4, 8, 191, 382, 764, 1528, 13931, 27862, 55724, 111448, 2660821, 5321642, 10643284, 21286568]

約数ペア:

[(1, 21286568), (2, 10643284), (4, 5321642), (8, 2660821), (191, 111448), (382, 55724), (764, 27862), (1528, 13931)]