21085437

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{1097}}^1$

素因数の和:1292

約数の個数: 16

約数和(自身を含む): 28987200

約数和(自身を除く): 7901763

約数列:

[1, 3, 43, 129, 149, 447, 1097, 3291, 6407, 19221, 47171, 141513, 163453, 490359, 7028479, 21085437]

約数ペア:

[(1, 21085437), (3, 7028479), (43, 490359), (129, 163453), (149, 141513), (447, 47171), (1097, 19221), (3291, 6407)]