1721223

素因数分解:

$3^3\times 7^2\times {\mathrm{1301}}^1$

素因数の和:1324

約数の個数: 24

約数和(自身を含む): 2968560

約数和(自身を除く): 1247337

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1301, 1323, 3903, 9107, 11709, 27321, 35127, 63749, 81963, 191247, 245889, 573741, 1721223]

約数ペア:

[(1, 1721223), (3, 573741), (7, 245889), (9, 191247), (21, 81963), (27, 63749), (49, 35127), (63, 27321), (147, 11709), (189, 9107), (441, 3903), (1301, 1323)]