21821481

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1289}}^1$

素因数の和:1331

約数の個数: 40

約数和(自身を含む): 37461600

約数和(自身を除く): 15640119

約数列:

[1, 3, 9, 11, 19, 27, 33, 57, 81, 99, 171, 209, 297, 513, 627, 891, 1289, 1539, 1881, 3867, 5643, 11601, 14179, 16929, 24491, 34803, 42537, 73473, 104409, 127611, 220419, 269401, 382833, 661257, 808203, 1148499, 1983771, 2424609, 7273827, 21821481]

約数ペア:

[(1, 21821481), (3, 7273827), (9, 2424609), (11, 1983771), (19, 1148499), (27, 808203), (33, 661257), (57, 382833), (81, 269401), (99, 220419), (171, 127611), (209, 104409), (297, 73473), (513, 42537), (627, 34803), (891, 24491), (1289, 16929), (1539, 14179), (1881, 11601), (3867, 5643)]