19785753

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{643}}^1$

素因数の和:925

約数の個数: 24

約数和(自身を含む): 30942912

約数和(自身を除く): 11157159

約数列:

[1, 3, 9, 13, 39, 117, 263, 643, 789, 1929, 2367, 3419, 5787, 8359, 10257, 25077, 30771, 75231, 169109, 507327, 1521981, 2198417, 6595251, 19785753]

約数ペア:

[(1, 19785753), (3, 6595251), (9, 2198417), (13, 1521981), (39, 507327), (117, 169109), (263, 75231), (643, 30771), (789, 25077), (1929, 10257), (2367, 8359), (3419, 5787)]