21393831

素因数分解:

$3^1\times {\mathrm{83}}^1\times {\mathrm{151}}^1\times {\mathrm{569}}^1$

素因数の和:806

約数の個数: 16

約数和(自身を含む): 29111040

約数和(自身を除く): 7717209

約数列:

[1, 3, 83, 151, 249, 453, 569, 1707, 12533, 37599, 47227, 85919, 141681, 257757, 7131277, 21393831]

約数ペア:

[(1, 21393831), (3, 7131277), (83, 257757), (151, 141681), (249, 85919), (453, 47227), (569, 37599), (1707, 12533)]