19995999

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{6619}}^1$

素因数の和:6694

約数の個数: 16

約数和(自身を含む): 28598400

約数和(自身を除く): 8602401

約数列:

[1, 3, 19, 53, 57, 159, 1007, 3021, 6619, 19857, 125761, 350807, 377283, 1052421, 6665333, 19995999]

約数ペア:

[(1, 19995999), (3, 6665333), (19, 1052421), (53, 377283), (57, 350807), (159, 125761), (1007, 19857), (3021, 6619)]