1978767

素因数分解:

$3^2\times 7^3\times {\mathrm{641}}^1$

素因数の和:668

約数の個数: 24

約数和(自身を含む): 3338400

約数和(自身を除く): 1359633

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 641, 1029, 1923, 3087, 4487, 5769, 13461, 31409, 40383, 94227, 219863, 282681, 659589, 1978767]

約数ペア:

[(1, 1978767), (3, 659589), (7, 282681), (9, 219863), (21, 94227), (49, 40383), (63, 31409), (147, 13461), (343, 5769), (441, 4487), (641, 3087), (1029, 1923)]