28216221

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1$

素因数の和:313

約数の個数: 32

約数和(自身を含む): 42425856

約数和(自身を除く): 14209635

約数列:

[1, 3, 11, 33, 61, 107, 131, 183, 321, 393, 671, 1177, 1441, 2013, 3531, 4323, 6527, 7991, 14017, 19581, 23973, 42051, 71797, 87901, 154187, 215391, 263703, 462561, 855037, 2565111, 9405407, 28216221]

約数ペア:

[(1, 28216221), (3, 9405407), (11, 2565111), (33, 855037), (61, 462561), (107, 263703), (131, 215391), (183, 154187), (321, 87901), (393, 71797), (671, 42051), (1177, 23973), (1441, 19581), (2013, 14017), (3531, 7991), (4323, 6527)]