21149936

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{42641}}^1$

素因数の和:42680

約数の個数: 20

約数和(自身を含む): 42300864

約数和(自身を除く): 21150928

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 42641, 85282, 170564, 341128, 682256, 1321871, 2643742, 5287484, 10574968, 21149936]

約数ペア:

[(1, 21149936), (2, 10574968), (4, 5287484), (8, 2643742), (16, 1321871), (31, 682256), (62, 341128), (124, 170564), (248, 85282), (496, 42641)]