17987949

素因数分解:

$3^2\times 7^3\times {\mathrm{5827}}^1$

素因数の和:5854

約数の個数: 24

約数和(自身を含む): 30305600

約数和(自身を除く): 12317651

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 5827, 17481, 40789, 52443, 122367, 285523, 367101, 856569, 1998661, 2569707, 5995983, 17987949]

約数ペア:

[(1, 17987949), (3, 5995983), (7, 2569707), (9, 1998661), (21, 856569), (49, 367101), (63, 285523), (147, 122367), (343, 52443), (441, 40789), (1029, 17481), (3087, 5827)]