21382355

素因数分解:

$5^1\times {\mathrm{127}}^1\times {\mathrm{151}}^1\times {\mathrm{223}}^1$

素因数の和:506

約数の個数: 16

約数和(自身を含む): 26148864

約数和(自身を除く): 4766509

約数列:

[1, 5, 127, 151, 223, 635, 755, 1115, 19177, 28321, 33673, 95885, 141605, 168365, 4276471, 21382355]

約数ペア:

[(1, 21382355), (5, 4276471), (127, 168365), (151, 141605), (223, 95885), (635, 33673), (755, 28321), (1115, 19177)]