285608860

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{1447}}^1$

素因数の和:1666

約数の個数: 48

約数和(自身を含む): 613025280

約数和(自身を除く): 327416420

約数列:

[1, 2, 4, 5, 10, 20, 71, 139, 142, 278, 284, 355, 556, 695, 710, 1390, 1420, 1447, 2780, 2894, 5788, 7235, 9869, 14470, 19738, 28940, 39476, 49345, 98690, 102737, 197380, 201133, 205474, 402266, 410948, 513685, 804532, 1005665, 1027370, 2011330, 2054740, 4022660, 14280443, 28560886, 57121772, 71402215, 142804430, 285608860]

約数ペア:

[(1, 285608860), (2, 142804430), (4, 71402215), (5, 57121772), (10, 28560886), (20, 14280443), (71, 4022660), (139, 2054740), (142, 2011330), (278, 1027370), (284, 1005665), (355, 804532), (556, 513685), (695, 410948), (710, 402266), (1390, 205474), (1420, 201133), (1447, 197380), (2780, 102737), (2894, 98690), (5788, 49345), (7235, 39476), (9869, 28940), (14470, 19738)]