21321249

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{8699}}^1$

素因数の和:8764

約数の個数: 16

約数和(自身を含む): 30624000

約数和(自身を除く): 9302751

約数列:

[1, 3, 19, 43, 57, 129, 817, 2451, 8699, 26097, 165281, 374057, 495843, 1122171, 7107083, 21321249]

約数ペア:

[(1, 21321249), (3, 7107083), (19, 1122171), (43, 495843), (57, 374057), (129, 165281), (817, 26097), (2451, 8699)]