64663389

素因数分解:

$3^2\times 7^3\times {\mathrm{20947}}^1$

素因数の和:20974

約数の個数: 24

約数和(自身を含む): 108929600

約数和(自身を除く): 44266211

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 20947, 62841, 146629, 188523, 439887, 1026403, 1319661, 3079209, 7184821, 9237627, 21554463, 64663389]

約数ペア:

[(1, 64663389), (3, 21554463), (7, 9237627), (9, 7184821), (21, 3079209), (49, 1319661), (63, 1026403), (147, 439887), (343, 188523), (441, 146629), (1029, 62841), (3087, 20947)]