31977

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:53

約数の個数: 24

約数和(自身を含む): 56160

約数和(自身を除く): 24183

約数列:

[1, 3, 9, 11, 17, 19, 33, 51, 57, 99, 153, 171, 187, 209, 323, 561, 627, 969, 1683, 1881, 2907, 3553, 10659, 31977]

約数ペア:

[(1, 31977), (3, 10659), (9, 3553), (11, 2907), (17, 1881), (19, 1683), (33, 969), (51, 627), (57, 561), (99, 323), (153, 209), (171, 187)]