20178716

素因数分解:

$2^2\times {\mathrm{97}}^1\times {\mathrm{131}}^1\times {\mathrm{397}}^1$

素因数の和:629

約数の個数: 24

約数和(自身を含む): 36039696

約数和(自身を除く): 15860980

約数列:

[1, 2, 4, 97, 131, 194, 262, 388, 397, 524, 794, 1588, 12707, 25414, 38509, 50828, 52007, 77018, 104014, 154036, 208028, 5044679, 10089358, 20178716]

約数ペア:

[(1, 20178716), (2, 10089358), (4, 5044679), (97, 208028), (131, 154036), (194, 104014), (262, 77018), (388, 52007), (397, 50828), (524, 38509), (794, 25414), (1588, 12707)]