989380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{191}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 2451456

約数和(自身を除く): 1462076

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 191, 259, 370, 382, 518, 740, 764, 955, 1036, 1295, 1337, 1910, 2590, 2674, 3820, 5180, 5348, 6685, 7067, 13370, 14134, 26740, 28268, 35335, 49469, 70670, 98938, 141340, 197876, 247345, 494690, 989380]

約数ペア:

[(1, 989380), (2, 494690), (4, 247345), (5, 197876), (7, 141340), (10, 98938), (14, 70670), (20, 49469), (28, 35335), (35, 28268), (37, 26740), (70, 14134), (74, 13370), (140, 7067), (148, 6685), (185, 5348), (191, 5180), (259, 3820), (370, 2674), (382, 2590), (518, 1910), (740, 1337), (764, 1295), (955, 1036)]