20954421

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{907}}^1$

素因数の和:1081

約数の個数: 24

約数和(自身を含む): 32295744

約数和(自身を除く): 11341323

約数列:

[1, 3, 9, 17, 51, 151, 153, 453, 907, 1359, 2567, 2721, 7701, 8163, 15419, 23103, 46257, 136957, 138771, 410871, 1232613, 2328269, 6984807, 20954421]

約数ペア:

[(1, 20954421), (3, 6984807), (9, 2328269), (17, 1232613), (51, 410871), (151, 138771), (153, 136957), (453, 46257), (907, 23103), (1359, 15419), (2567, 8163), (2721, 7701)]