21163986

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^2\times {\mathrm{3257}}^1$

素因数の和:3303

約数の個数: 36

約数和(自身を含む): 48410622

約数和(自身を除く): 27246636

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 171, 342, 361, 722, 1083, 2166, 3249, 3257, 6498, 6514, 9771, 19542, 29313, 58626, 61883, 123766, 185649, 371298, 556947, 1113894, 1175777, 2351554, 3527331, 7054662, 10581993, 21163986]

約数ペア:

[(1, 21163986), (2, 10581993), (3, 7054662), (6, 3527331), (9, 2351554), (18, 1175777), (19, 1113894), (38, 556947), (57, 371298), (114, 185649), (171, 123766), (342, 61883), (361, 58626), (722, 29313), (1083, 19542), (2166, 9771), (3249, 6514), (3257, 6498)]