19982725

素因数分解:

$5^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1283}}^1$

素因数の和:1389

約数の個数: 24

約数和(自身を含む): 28658880

約数和(自身を除く): 8676155

約数列:

[1, 5, 7, 25, 35, 89, 175, 445, 623, 1283, 2225, 3115, 6415, 8981, 15575, 32075, 44905, 114187, 224525, 570935, 799309, 2854675, 3996545, 19982725]

約数ペア:

[(1, 19982725), (5, 3996545), (7, 2854675), (25, 799309), (35, 570935), (89, 224525), (175, 114187), (445, 44905), (623, 32075), (1283, 15575), (2225, 8981), (3115, 6415)]