21041276

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{1723}}^1$

素因数の和:1841

約数の個数: 24

約数和(自身を含む): 38231424

約数和(自身を除く): 17190148

約数列:

[1, 2, 4, 43, 71, 86, 142, 172, 284, 1723, 3053, 3446, 6106, 6892, 12212, 74089, 122333, 148178, 244666, 296356, 489332, 5260319, 10520638, 21041276]

約数ペア:

[(1, 21041276), (2, 10520638), (4, 5260319), (43, 489332), (71, 296356), (86, 244666), (142, 148178), (172, 122333), (284, 74089), (1723, 12212), (3053, 6892), (3446, 6106)]