21126561

素因数分解:

$3^1\times {\mathrm{149}}^1\times {\mathrm{151}}^1\times {\mathrm{313}}^1$

素因数の和:616

約数の個数: 16

約数和(自身を含む): 28636800

約数和(自身を除く): 7510239

約数列:

[1, 3, 149, 151, 313, 447, 453, 939, 22499, 46637, 47263, 67497, 139911, 141789, 7042187, 21126561]

約数ペア:

[(1, 21126561), (3, 7042187), (149, 141789), (151, 139911), (313, 67497), (447, 47263), (453, 46637), (939, 22499)]