81388740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{911}}^1\times {\mathrm{1489}}^1$

素因数の和:2412

約数の個数: 48

約数和(自身を含む): 228291840

約数和(自身を除く): 146903100

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 911, 1489, 1822, 2733, 2978, 3644, 4467, 4555, 5466, 5956, 7445, 8934, 9110, 10932, 13665, 14890, 17868, 18220, 22335, 27330, 29780, 44670, 54660, 89340, 1356479, 2712958, 4069437, 5425916, 6782395, 8138874, 13564790, 16277748, 20347185, 27129580, 40694370, 81388740]

約数ペア:

[(1, 81388740), (2, 40694370), (3, 27129580), (4, 20347185), (5, 16277748), (6, 13564790), (10, 8138874), (12, 6782395), (15, 5425916), (20, 4069437), (30, 2712958), (60, 1356479), (911, 89340), (1489, 54660), (1822, 44670), (2733, 29780), (2978, 27330), (3644, 22335), (4467, 18220), (4555, 17868), (5466, 14890), (5956, 13665), (7445, 10932), (8934, 9110)]