21331076

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{4229}}^1$

素因数の和:4343

約数の個数: 24

約数和(自身を含む): 40624920

約数和(自身を除く): 19293844

約数列:

[1, 2, 4, 13, 26, 52, 97, 194, 388, 1261, 2522, 4229, 5044, 8458, 16916, 54977, 109954, 219908, 410213, 820426, 1640852, 5332769, 10665538, 21331076]

約数ペア:

[(1, 21331076), (2, 10665538), (4, 5332769), (13, 1640852), (26, 820426), (52, 410213), (97, 219908), (194, 109954), (388, 54977), (1261, 16916), (2522, 8458), (4229, 5044)]