258771821

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{1489}}^1$

素因数の和:1605

約数の個数: 32

約数和(自身を含む): 337002240

約数和(自身を除く): 78230419

約数列:

[1, 7, 11, 37, 61, 77, 259, 407, 427, 671, 1489, 2257, 2849, 4697, 10423, 15799, 16379, 24827, 55093, 90829, 114653, 173789, 385651, 606023, 635803, 999119, 3360673, 4242161, 6993833, 23524711, 36967403, 258771821]

約数ペア:

[(1, 258771821), (7, 36967403), (11, 23524711), (37, 6993833), (61, 4242161), (77, 3360673), (259, 999119), (407, 635803), (427, 606023), (671, 385651), (1489, 173789), (2257, 114653), (2849, 90829), (4697, 55093), (10423, 24827), (15799, 16379)]