201991497

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{109}}^1\times {\mathrm{251}}^1$

素因数の和:493

約数の個数: 32

約数和(自身を含む): 287400960

約数和(自身を除く): 85409463

約数列:

[1, 3, 23, 69, 107, 109, 251, 321, 327, 753, 2461, 2507, 5773, 7383, 7521, 11663, 17319, 26857, 27359, 34989, 80571, 82077, 268249, 617711, 629257, 804747, 1853133, 1887771, 2927413, 8782239, 67330499, 201991497]

約数ペア:

[(1, 201991497), (3, 67330499), (23, 8782239), (69, 2927413), (107, 1887771), (109, 1853133), (251, 804747), (321, 629257), (327, 617711), (753, 268249), (2461, 82077), (2507, 80571), (5773, 34989), (7383, 27359), (7521, 26857), (11663, 17319)]