81761085

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{719}}^1$

素因数の和:775

約数の個数: 72

約数和(自身を含む): 171175680

約数和(自身を除く): 89414595

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 57, 63, 95, 105, 133, 171, 285, 315, 361, 399, 665, 719, 855, 1083, 1197, 1805, 1995, 2157, 2527, 3249, 3595, 5033, 5415, 5985, 6471, 7581, 10785, 12635, 13661, 15099, 16245, 22743, 25165, 32355, 37905, 40983, 45297, 68305, 75495, 95627, 113715, 122949, 204915, 226485, 259559, 286881, 478135, 614745, 778677, 860643, 1297795, 1434405, 1816913, 2336031, 3893385, 4303215, 5450739, 9084565, 11680155, 16352217, 27253695, 81761085]

約数ペア:

[(1, 81761085), (3, 27253695), (5, 16352217), (7, 11680155), (9, 9084565), (15, 5450739), (19, 4303215), (21, 3893385), (35, 2336031), (45, 1816913), (57, 1434405), (63, 1297795), (95, 860643), (105, 778677), (133, 614745), (171, 478135), (285, 286881), (315, 259559), (361, 226485), (399, 204915), (665, 122949), (719, 113715), (855, 95627), (1083, 75495), (1197, 68305), (1805, 45297), (1995, 40983), (2157, 37905), (2527, 32355), (3249, 25165), (3595, 22743), (5033, 16245), (5415, 15099), (5985, 13661), (6471, 12635), (7581, 10785)]