161721

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{151}}^1$

素因数の和:181

約数の個数: 24

約数和(自身を含む): 284544

約数和(自身を除く): 122823

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 151, 153, 357, 453, 1057, 1071, 1359, 2567, 3171, 7701, 9513, 17969, 23103, 53907, 161721]

約数ペア:

[(1, 161721), (3, 53907), (7, 23103), (9, 17969), (17, 9513), (21, 7701), (51, 3171), (63, 2567), (119, 1359), (151, 1071), (153, 1057), (357, 453)]