518978740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{26669}}^1$

素因数の和:26824

約数の個数: 48

約数和(自身を含む): 1254556800

約数和(自身を除く): 735578060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1390, 1946, 2780, 3892, 4865, 9730, 19460, 26669, 53338, 106676, 133345, 186683, 266690, 373366, 533380, 746732, 933415, 1866830, 3706991, 3733660, 7413982, 14827964, 18534955, 25948937, 37069910, 51897874, 74139820, 103795748, 129744685, 259489370, 518978740]

約数ペア:

[(1, 518978740), (2, 259489370), (4, 129744685), (5, 103795748), (7, 74139820), (10, 51897874), (14, 37069910), (20, 25948937), (28, 18534955), (35, 14827964), (70, 7413982), (139, 3733660), (140, 3706991), (278, 1866830), (556, 933415), (695, 746732), (973, 533380), (1390, 373366), (1946, 266690), (2780, 186683), (3892, 133345), (4865, 106676), (9730, 53338), (19460, 26669)]