21558866

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^2\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:167

約数の個数: 48

約数和(自身を含む): 40134528

約数和(自身を除く): 18575662

約数列:

[1, 2, 7, 14, 23, 41, 46, 71, 82, 142, 161, 287, 322, 497, 529, 574, 943, 994, 1058, 1633, 1886, 2911, 3266, 3703, 5822, 6601, 7406, 11431, 13202, 20377, 21689, 22862, 37559, 40754, 43378, 66953, 75118, 133906, 151823, 262913, 303646, 468671, 525826, 937342, 1539919, 3079838, 10779433, 21558866]

約数ペア:

[(1, 21558866), (2, 10779433), (7, 3079838), (14, 1539919), (23, 937342), (41, 525826), (46, 468671), (71, 303646), (82, 262913), (142, 151823), (161, 133906), (287, 75118), (322, 66953), (497, 43378), (529, 40754), (574, 37559), (943, 22862), (994, 21689), (1058, 20377), (1633, 13202), (1886, 11431), (2911, 7406), (3266, 6601), (3703, 5822)]