18909938

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1$

素因数の和:290

約数の個数: 32

約数和(自身を含む): 30868992

約数和(自身を除く): 11959054

約数列:

[1, 2, 31, 41, 43, 62, 82, 86, 173, 346, 1271, 1333, 1763, 2542, 2666, 3526, 5363, 7093, 7439, 10726, 14186, 14878, 54653, 109306, 219883, 230609, 304999, 439766, 461218, 609998, 9454969, 18909938]

約数ペア:

[(1, 18909938), (2, 9454969), (31, 609998), (41, 461218), (43, 439766), (62, 304999), (82, 230609), (86, 219883), (173, 109306), (346, 54653), (1271, 14878), (1333, 14186), (1763, 10726), (2542, 7439), (2666, 7093), (3526, 5363)]