81345180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{193679}}^1$

素因数の和:193698

約数の個数: 48

約数和(自身を含む): 260305920

約数和(自身を除く): 178960740

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, 193679, 387358, 581037, 774716, 968395, 1162074, 1355753, 1936790, 2324148, 2711506, 2905185, 3873580, 4067259, 5423012, 5810370, 6778765, 8134518, 11620740, 13557530, 16269036, 20336295, 27115060, 40672590, 81345180]

約数ペア:

[(1, 81345180), (2, 40672590), (3, 27115060), (4, 20336295), (5, 16269036), (6, 13557530), (7, 11620740), (10, 8134518), (12, 6778765), (14, 5810370), (15, 5423012), (20, 4067259), (21, 3873580), (28, 2905185), (30, 2711506), (35, 2324148), (42, 1936790), (60, 1355753), (70, 1162074), (84, 968395), (105, 774716), (140, 581037), (210, 387358), (420, 193679)]