81786180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{194729}}^1$

素因数の和:194748

約数の個数: 48

約数和(自身を含む): 261717120

約数和(自身を除く): 179930940

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 194729, 389458, 584187, 778916, 973645, 1168374, 1363103, 1947290, 2336748, 2726206, 2920935, 3894580, 4089309, 5452412, 5841870, 6815515, 8178618, 11683740, 13631030, 16357236, 20446545, 27262060, 40893090, 81786180]

約数ペア:

[(1, 81786180), (2, 40893090), (3, 27262060), (4, 20446545), (5, 16357236), (6, 13631030), (7, 11683740), (10, 8178618), (12, 6815515), (14, 5841870), (15, 5452412), (20, 4089309), (21, 3894580), (28, 2920935), (30, 2726206), (35, 2336748), (42, 1947290), (60, 1363103), (70, 1168374), (84, 973645), (105, 778916), (140, 584187), (210, 389458), (420, 194729)]