15815289

素因数分解:

$3^1\times 7^2\times {\mathrm{271}}^1\times {\mathrm{397}}^1$

素因数の和:685

約数の個数: 24

約数和(自身を含む): 24682368

約数和(自身を除く): 8867079

約数列:

[1, 3, 7, 21, 49, 147, 271, 397, 813, 1191, 1897, 2779, 5691, 8337, 13279, 19453, 39837, 58359, 107587, 322761, 753109, 2259327, 5271763, 15815289]

約数ペア:

[(1, 15815289), (3, 5271763), (7, 2259327), (21, 753109), (49, 322761), (147, 107587), (271, 58359), (397, 39837), (813, 19453), (1191, 13279), (1897, 8337), (2779, 5691)]