21132903

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{4241}}^1$

素因数の和:4406

約数の個数: 16

約数和(自身を含む): 30949632

約数和(自身を除く): 9816729

約数列:

[1, 3, 11, 33, 151, 453, 1661, 4241, 4983, 12723, 46651, 139953, 640391, 1921173, 7044301, 21132903]

約数ペア:

[(1, 21132903), (3, 7044301), (11, 1921173), (33, 640391), (151, 139953), (453, 46651), (1661, 12723), (4241, 4983)]