19879825

素因数分解:

$5^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{2417}}^1$

素因数の和:2481

約数の個数: 24

約数和(自身を含む): 28783872

約数和(自身を除く): 8904047

約数列:

[1, 5, 7, 25, 35, 47, 175, 235, 329, 1175, 1645, 2417, 8225, 12085, 16919, 60425, 84595, 113599, 422975, 567995, 795193, 2839975, 3975965, 19879825]

約数ペア:

[(1, 19879825), (5, 3975965), (7, 2839975), (25, 795193), (35, 567995), (47, 422975), (175, 113599), (235, 84595), (329, 60425), (1175, 16919), (1645, 12085), (2417, 8225)]