81620700

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{38867}}^1$

素因数の和:38891

約数の個数: 72

約数和(自身を含む): 269899392

約数和(自身を除く): 188278692

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100, 38867, 77734, 116601, 155468, 194335, 233202, 272069, 388670, 466404, 544138, 583005, 777340, 816207, 971675, 1088276, 1166010, 1360345, 1632414, 1943350, 2332020, 2720690, 2915025, 3264828, 3886700, 4081035, 5441380, 5830050, 6801725, 8162070, 11660100, 13603450, 16324140, 20405175, 27206900, 40810350, 81620700]

約数ペア:

[(1, 81620700), (2, 40810350), (3, 27206900), (4, 20405175), (5, 16324140), (6, 13603450), (7, 11660100), (10, 8162070), (12, 6801725), (14, 5830050), (15, 5441380), (20, 4081035), (21, 3886700), (25, 3264828), (28, 2915025), (30, 2720690), (35, 2332020), (42, 1943350), (50, 1632414), (60, 1360345), (70, 1166010), (75, 1088276), (84, 971675), (100, 816207), (105, 777340), (140, 583005), (150, 544138), (175, 466404), (210, 388670), (300, 272069), (350, 233202), (420, 194335), (525, 155468), (700, 116601), (1050, 77734), (2100, 38867)]