21486777

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{271}}^1$

素因数の和:413

約数の個数: 32

約数和(自身を含む): 32901120

約数和(自身を除く): 11414343

約数列:

[1, 3, 13, 19, 39, 57, 107, 247, 271, 321, 741, 813, 1391, 2033, 3523, 4173, 5149, 6099, 10569, 15447, 26429, 28997, 66937, 79287, 86991, 200811, 376961, 550943, 1130883, 1652829, 7162259, 21486777]

約数ペア:

[(1, 21486777), (3, 7162259), (13, 1652829), (19, 1130883), (39, 550943), (57, 376961), (107, 200811), (247, 86991), (271, 79287), (321, 66937), (741, 28997), (813, 26429), (1391, 15447), (2033, 10569), (3523, 6099), (4173, 5149)]