18487893

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{397}}^1$

素因数の和:481

約数の個数: 24

約数和(自身を含む): 26688288

約数和(自身を除く): 8200395

約数列:

[1, 3, 19, 43, 57, 129, 361, 397, 817, 1083, 1191, 2451, 7543, 15523, 17071, 22629, 46569, 51213, 143317, 324349, 429951, 973047, 6162631, 18487893]

約数ペア:

[(1, 18487893), (3, 6162631), (19, 973047), (43, 429951), (57, 324349), (129, 143317), (361, 51213), (397, 46569), (817, 22629), (1083, 17071), (1191, 15523), (2451, 7543)]