19978876

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{229}}^1\times {\mathrm{1283}}^1$

素因数の和:1533

約数の個数: 24

約数和(自身を含む): 37210320

約数和(自身を除く): 17231444

約数列:

[1, 2, 4, 17, 34, 68, 229, 458, 916, 1283, 2566, 3893, 5132, 7786, 15572, 21811, 43622, 87244, 293807, 587614, 1175228, 4994719, 9989438, 19978876]

約数ペア:

[(1, 19978876), (2, 9989438), (4, 4994719), (17, 1175228), (34, 587614), (68, 293807), (229, 87244), (458, 43622), (916, 21811), (1283, 15572), (2566, 7786), (3893, 5132)]