21258644

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{431}}^1$

素因数の和:524

約数の個数: 48

約数和(自身を含む): 43545600

約数和(自身を除く): 22286956

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 59, 76, 118, 209, 236, 418, 431, 649, 836, 862, 1121, 1298, 1724, 2242, 2596, 4484, 4741, 8189, 9482, 12331, 16378, 18964, 24662, 25429, 32756, 49324, 50858, 90079, 101716, 180158, 279719, 360316, 483151, 559438, 966302, 1118876, 1932604, 5314661, 10629322, 21258644]

約数ペア:

[(1, 21258644), (2, 10629322), (4, 5314661), (11, 1932604), (19, 1118876), (22, 966302), (38, 559438), (44, 483151), (59, 360316), (76, 279719), (118, 180158), (209, 101716), (236, 90079), (418, 50858), (431, 49324), (649, 32756), (836, 25429), (862, 24662), (1121, 18964), (1298, 16378), (1724, 12331), (2242, 9482), (2596, 8189), (4484, 4741)]