642447

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1$

素因数の和:72

約数の個数: 36

約数和(自身を含む): 1117480

約数和(自身を除く): 475033

約数列:

[1, 3, 9, 13, 17, 19, 39, 51, 57, 117, 153, 171, 221, 247, 289, 323, 663, 741, 867, 969, 1989, 2223, 2601, 2907, 3757, 4199, 5491, 11271, 12597, 16473, 33813, 37791, 49419, 71383, 214149, 642447]

約数ペア:

[(1, 642447), (3, 214149), (9, 71383), (13, 49419), (17, 37791), (19, 33813), (39, 16473), (51, 12597), (57, 11271), (117, 5491), (153, 4199), (171, 3757), (221, 2907), (247, 2601), (289, 2223), (323, 1989), (663, 969), (741, 867)]