288813889

素因数分解:

$7^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{487}}^1$

素因数の和:547

約数の個数: 40

約数和(自身を含む): 382728640

約数和(自身を除く): 93914751

約数列:

[1, 7, 13, 19, 49, 91, 133, 247, 343, 487, 637, 931, 1729, 2401, 3409, 4459, 6331, 6517, 9253, 12103, 23863, 31213, 44317, 45619, 64771, 84721, 120289, 167041, 310219, 453397, 593047, 842023, 1169287, 2171533, 3173779, 5894161, 15200731, 22216453, 41259127, 288813889]

約数ペア:

[(1, 288813889), (7, 41259127), (13, 22216453), (19, 15200731), (49, 5894161), (91, 3173779), (133, 2171533), (247, 1169287), (343, 842023), (487, 593047), (637, 453397), (931, 310219), (1729, 167041), (2401, 120289), (3409, 84721), (4459, 64771), (6331, 45619), (6517, 44317), (9253, 31213), (12103, 23863)]