21294903

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{479}}^1$

素因数の和:591

約数の個数: 32

約数和(自身を含む): 34099200

約数和(自身を除く): 12804297

約数列:

[1, 3, 7, 21, 29, 73, 87, 203, 219, 479, 511, 609, 1437, 1533, 2117, 3353, 6351, 10059, 13891, 14819, 34967, 41673, 44457, 97237, 104901, 244769, 291711, 734307, 1014043, 3042129, 7098301, 21294903]

約数ペア:

[(1, 21294903), (3, 7098301), (7, 3042129), (21, 1014043), (29, 734307), (73, 291711), (87, 244769), (203, 104901), (219, 97237), (479, 44457), (511, 41673), (609, 34967), (1437, 14819), (1533, 13891), (2117, 10059), (3353, 6351)]