21851564

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{33931}}^1$

素因数の和:33965

約数の個数: 24

約数和(自身を含む): 45604608

約数和(自身を除く): 23753044

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644, 33931, 67862, 135724, 237517, 475034, 780413, 950068, 1560826, 3121652, 5462891, 10925782, 21851564]

約数ペア:

[(1, 21851564), (2, 10925782), (4, 5462891), (7, 3121652), (14, 1560826), (23, 950068), (28, 780413), (46, 475034), (92, 237517), (161, 135724), (322, 67862), (644, 33931)]