209901615

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{263}}^1\times {\mathrm{691}}^1$

素因数の和:980

約数の個数: 64

約数和(自身を含む): 420913152

約数和(自身を除く): 211011537

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 165, 231, 263, 385, 691, 789, 1155, 1315, 1841, 2073, 2893, 3455, 3945, 4837, 5523, 7601, 8679, 9205, 10365, 14465, 14511, 20251, 22803, 24185, 27615, 38005, 43395, 53207, 60753, 72555, 101255, 114015, 159621, 181733, 266035, 303765, 545199, 798105, 908665, 1272131, 1999063, 2725995, 3816393, 5997189, 6360655, 9995315, 13993441, 19081965, 29985945, 41980323, 69967205, 209901615]

約数ペア:

[(1, 209901615), (3, 69967205), (5, 41980323), (7, 29985945), (11, 19081965), (15, 13993441), (21, 9995315), (33, 6360655), (35, 5997189), (55, 3816393), (77, 2725995), (105, 1999063), (165, 1272131), (231, 908665), (263, 798105), (385, 545199), (691, 303765), (789, 266035), (1155, 181733), (1315, 159621), (1841, 114015), (2073, 101255), (2893, 72555), (3455, 60753), (3945, 53207), (4837, 43395), (5523, 38005), (7601, 27615), (8679, 24185), (9205, 22803), (10365, 20251), (14465, 14511)]