21381005

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{2459}}^1$

素因数の和:2548

約数の個数: 16

約数和(自身を含む): 26922240

約数和(自身を除く): 5541235

約数列:

[1, 5, 37, 47, 185, 235, 1739, 2459, 8695, 12295, 90983, 115573, 454915, 577865, 4276201, 21381005]

約数ペア:

[(1, 21381005), (5, 4276201), (37, 577865), (47, 454915), (185, 115573), (235, 90983), (1739, 12295), (2459, 8695)]