216958251

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{547}}^1$

素因数の和:723

約数の個数: 32

約数和(自身を含む): 309335040

約数和(自身を除く): 92376789

約数列:

[1, 3, 29, 47, 87, 97, 141, 291, 547, 1363, 1641, 2813, 4089, 4559, 8439, 13677, 15863, 25709, 47589, 53059, 77127, 132211, 159177, 396633, 745561, 1538711, 2236683, 2493773, 4616133, 7481319, 72319417, 216958251]

約数ペア:

[(1, 216958251), (3, 72319417), (29, 7481319), (47, 4616133), (87, 2493773), (97, 2236683), (141, 1538711), (291, 745561), (547, 396633), (1363, 159177), (1641, 132211), (2813, 77127), (4089, 53059), (4559, 47589), (8439, 25709), (13677, 15863)]