18697287

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1\times {\mathrm{157}}^1$

素因数の和:327

約数の個数: 32

約数和(自身を含む): 29486592

約数和(自身を除く): 10789305

約数列:

[1, 3, 7, 21, 53, 107, 157, 159, 321, 371, 471, 749, 1099, 1113, 2247, 3297, 5671, 8321, 16799, 17013, 24963, 39697, 50397, 58247, 117593, 119091, 174741, 352779, 890347, 2671041, 6232429, 18697287]

約数ペア:

[(1, 18697287), (3, 6232429), (7, 2671041), (21, 890347), (53, 352779), (107, 174741), (157, 119091), (159, 117593), (321, 58247), (371, 50397), (471, 39697), (749, 24963), (1099, 17013), (1113, 16799), (2247, 8321), (3297, 5671)]