21072974

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{12097}}^1$

素因数の和:12179

約数の個数: 16

約数和(自身を含む): 34551888

約数和(自身を除く): 13478914

約数列:

[1, 2, 13, 26, 67, 134, 871, 1742, 12097, 24194, 157261, 314522, 810499, 1620998, 10536487, 21072974]

約数ペア:

[(1, 21072974), (2, 10536487), (13, 1620998), (26, 810499), (67, 314522), (134, 157261), (871, 24194), (1742, 12097)]