21719984

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{863}}^1$

素因数の和:906

約数の個数: 60

約数和(自身を含む): 49871808

約数和(自身を除く): 28151824

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 44, 52, 88, 104, 121, 143, 176, 208, 242, 286, 484, 572, 863, 968, 1144, 1573, 1726, 1936, 2288, 3146, 3452, 6292, 6904, 9493, 11219, 12584, 13808, 18986, 22438, 25168, 37972, 44876, 75944, 89752, 104423, 123409, 151888, 179504, 208846, 246818, 417692, 493636, 835384, 987272, 1357499, 1670768, 1974544, 2714998, 5429996, 10859992, 21719984]

約数ペア:

[(1, 21719984), (2, 10859992), (4, 5429996), (8, 2714998), (11, 1974544), (13, 1670768), (16, 1357499), (22, 987272), (26, 835384), (44, 493636), (52, 417692), (88, 246818), (104, 208846), (121, 179504), (143, 151888), (176, 123409), (208, 104423), (242, 89752), (286, 75944), (484, 44876), (572, 37972), (863, 25168), (968, 22438), (1144, 18986), (1573, 13808), (1726, 12584), (1936, 11219), (2288, 9493), (3146, 6904), (3452, 6292)]