251379

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:107

約数の個数: 24

約数和(自身を含む): 404352

約数和(自身を除く): 152973

約数列:

[1, 3, 9, 17, 31, 51, 53, 93, 153, 159, 279, 477, 527, 901, 1581, 1643, 2703, 4743, 4929, 8109, 14787, 27931, 83793, 251379]

約数ペア:

[(1, 251379), (3, 83793), (9, 27931), (17, 14787), (31, 8109), (51, 4929), (53, 4743), (93, 2703), (153, 1643), (159, 1581), (279, 901), (477, 527)]