18436821

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{179}}^1$

素因数の和:353

約数の個数: 32

約数和(自身を含む): 28224000

約数和(自身を除く): 9787179

約数列:

[1, 3, 13, 19, 39, 57, 139, 179, 247, 417, 537, 741, 1807, 2327, 2641, 3401, 5421, 6981, 7923, 10203, 24881, 34333, 44213, 74643, 102999, 132639, 323453, 472739, 970359, 1418217, 6145607, 18436821]

約数ペア:

[(1, 18436821), (3, 6145607), (13, 1418217), (19, 970359), (39, 472739), (57, 323453), (139, 132639), (179, 102999), (247, 74643), (417, 44213), (537, 34333), (741, 24881), (1807, 10203), (2327, 7923), (2641, 6981), (3401, 5421)]