20851137

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{151}}^1\times {\mathrm{229}}^1$

素因数の和:453

約数の個数: 24

約数和(自身を含む): 30904640

約数和(自身を除く): 10053503

約数列:

[1, 3, 9, 67, 151, 201, 229, 453, 603, 687, 1359, 2061, 10117, 15343, 30351, 34579, 46029, 91053, 103737, 138087, 311211, 2316793, 6950379, 20851137]

約数ペア:

[(1, 20851137), (3, 6950379), (9, 2316793), (67, 311211), (151, 138087), (201, 103737), (229, 91053), (453, 46029), (603, 34579), (687, 30351), (1359, 15343), (2061, 10117)]