21607916

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{397}}^1\times {\mathrm{1237}}^1$

素因数の和:1649

約数の個数: 24

約数和(自身を含む): 41388816

約数和(自身を除く): 19780900

約数列:

[1, 2, 4, 11, 22, 44, 397, 794, 1237, 1588, 2474, 4367, 4948, 8734, 13607, 17468, 27214, 54428, 491089, 982178, 1964356, 5401979, 10803958, 21607916]

約数ペア:

[(1, 21607916), (2, 10803958), (4, 5401979), (11, 1964356), (22, 982178), (44, 491089), (397, 54428), (794, 27214), (1237, 17468), (1588, 13607), (2474, 8734), (4367, 4948)]