30891987

素因数分解:

$3^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{8311}}^1$

素因数の和:8383

約数の個数: 24

約数和(自身を含む): 51866880

約数和(自身を除く): 20974893

約数列:

[1, 3, 7, 9, 21, 59, 63, 177, 413, 531, 1239, 3717, 8311, 24933, 58177, 74799, 174531, 490349, 523593, 1471047, 3432443, 4413141, 10297329, 30891987]

約数ペア:

[(1, 30891987), (3, 10297329), (7, 4413141), (9, 3432443), (21, 1471047), (59, 523593), (63, 490349), (177, 174531), (413, 74799), (531, 58177), (1239, 24933), (3717, 8311)]