19172825

素因数分解:

$5^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1231}}^1$

素因数の和:1337

約数の個数: 24

約数和(自身を含む): 27498240

約数和(自身を除く): 8325415

約数列:

[1, 5, 7, 25, 35, 89, 175, 445, 623, 1231, 2225, 3115, 6155, 8617, 15575, 30775, 43085, 109559, 215425, 547795, 766913, 2738975, 3834565, 19172825]

約数ペア:

[(1, 19172825), (5, 3834565), (7, 2738975), (25, 766913), (35, 547795), (89, 215425), (175, 109559), (445, 43085), (623, 30775), (1231, 15575), (2225, 8617), (3115, 6155)]