21081252

素因数分解:

$2^2\times 3^1\times {\mathrm{89}}^1\times {\mathrm{19739}}^1$

素因数の和:19835

約数の個数: 24

約数和(自身を含む): 49744800

約数和(自身を除く): 28663548

約数列:

[1, 2, 3, 4, 6, 12, 89, 178, 267, 356, 534, 1068, 19739, 39478, 59217, 78956, 118434, 236868, 1756771, 3513542, 5270313, 7027084, 10540626, 21081252]

約数ペア:

[(1, 21081252), (2, 10540626), (3, 7027084), (4, 5270313), (6, 3513542), (12, 1756771), (89, 236868), (178, 118434), (267, 78956), (356, 59217), (534, 39478), (1068, 19739)]