21227271

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{317}}^1$

素因数の和:451

約数の個数: 32

約数和(自身を含む): 32695488

約数和(自身を除く): 11468217

約数列:

[1, 3, 13, 17, 39, 51, 101, 221, 303, 317, 663, 951, 1313, 1717, 3939, 4121, 5151, 5389, 12363, 16167, 22321, 32017, 66963, 70057, 96051, 210171, 416221, 544289, 1248663, 1632867, 7075757, 21227271]

約数ペア:

[(1, 21227271), (3, 7075757), (13, 1632867), (17, 1248663), (39, 544289), (51, 416221), (101, 210171), (221, 96051), (303, 70057), (317, 66963), (663, 32017), (951, 22321), (1313, 16167), (1717, 12363), (3939, 5389), (4121, 5151)]