199778889

素因数分解:

$3^1\times {\mathrm{53}}^2\times {\mathrm{151}}^1\times {\mathrm{157}}^1$

素因数の和:417

約数の個数: 24

約数和(自身を含む): 275031232

約数和(自身を除く): 75252343

約数列:

[1, 3, 53, 151, 157, 159, 453, 471, 2809, 8003, 8321, 8427, 23707, 24009, 24963, 71121, 424159, 441013, 1256471, 1272477, 1323039, 3769413, 66592963, 199778889]

約数ペア:

[(1, 199778889), (3, 66592963), (53, 3769413), (151, 1323039), (157, 1272477), (159, 1256471), (453, 441013), (471, 424159), (2809, 71121), (8003, 24963), (8321, 24009), (8427, 23707)]