19980153

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{331}}^1\times {\mathrm{353}}^1$

素因数の和:709

約数の個数: 24

約数和(自身を含む): 30557280

約数和(自身を除く): 10577127

約数列:

[1, 3, 9, 19, 57, 171, 331, 353, 993, 1059, 2979, 3177, 6289, 6707, 18867, 20121, 56601, 60363, 116843, 350529, 1051587, 2220017, 6660051, 19980153]

約数ペア:

[(1, 19980153), (3, 6660051), (9, 2220017), (19, 1051587), (57, 350529), (171, 116843), (331, 60363), (353, 56601), (993, 20121), (1059, 18867), (2979, 6707), (3177, 6289)]